• Seeing is not believing: Leader humility, hypocrisy, and their impact on followers' behaviors

    Challenging the prevailing consensus that leader humility is uniformly beneficial we investigate circumstances where leader humility behaviors are positively perceived and yet negatively received due to attributions of impression management. Arising from potential inconsistencies in perceptions and attributions, we argue that followers may evaluate leader humility behavioral displays as either genuine or hypocritical. We conducted two studies, in different contexts, to test followers' reactions to leader humility displays. In Study 1 (Confucian Asian cluster), we used a survey methodology to test our theoretical model. Due to the validity problems with our instrumental variables, we were unable to draw conclusions from the results of study 1. In Study 2 (Anglo cluster), we used a scenario-based experimental design. While the hypothesized mediating effect via perceptions of leader hypocrisy was not supported by the results, we found support for the hypothesis that the interaction of leader humility and impression management positively influenced hypocrisy.

    Darren K. Bharanitharan, Kevin B. Lowe, Somayeh Bahmannia, Zhen Xiong Chen, Lin Cui·2021·The Leadership Quarterly
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  • Examining the relationship between subclinical levels of social anxiety and the rubber hand illusion

    An embodied sense of self allows individuals to acquire moment-to-moment insight regarding the relationship between themselves and their environment. Fundamental to this experience is information regarding body ownership and self-location, which can inform both intrapersonal and interpersonal functioning. Although it is well documented that variation in mental health symptoms can impact the accuracy of bodily self-perception, little research has, to date, explored the influence of social anxiety on the embodied self. To address this issue, here we propose to examine the impact of social anxiety on the rubber hand illusion (RHI), a procedure which can distort perceptions of body location and ownership. Related literature points to competing predictions relative to how symptoms of social anxiety potentially impact susceptibility to the RHI. In the current manuscript we present the results of a pilot study indicating a positive relationship between the strength of the RHI and social anxiety, and detail a proposed registered report that seeks to replicate and extend this experiment.

    M. C. Macpherson, A. Bîrlӑdeanu, L. K. Miles·2021·Acta Psychologica
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  • Heat and fraud: evaluating how room temperature influences fraud likelihood

    Despite the considerable amount of research devoted to understanding fraud, few studies have examined how the physical environment can influence the likelihood of committing fraud. One recent study found a link between room brightness and occurrence of human fraud behaviors. Therefore, the present study aims to investigate how temperature may affect fraud. Based on a power analysis using the effect size observed in a pilot study, we recruited 105 participants and randomly divided them into three temperature groups (warm, medium, and cool). We then counted fraud behaviors in each group and tested for potential significant differences with a Kruskal–Wallis test. Additionally, we used a correlation analysis to determine whether the perceived temperature affected fraud. As a result, regardless of participants’ subjective sensory experience or their physical environment, we did not find that temperature-related factors influence the incidence of fraud. We discussed the potential reason for the results and suggested directions for future research.

    Huanxu Liu, Jingwen Yang, Yuki Yamada·2020·Cognitive Research: Principles and Implications
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  • Exploring Mechanisms of Narrative Persuasion in a News Context: The Role of Narrative Structure, Perceived Similarity, Stigma, and Affect in Changing Attitudes

    Two exploratory studies demonstrate, for the first time, that narrative persuasion can diminish the stigma attached to social groups featured in journalistic narratives. Study 1 shows narrative format improves stigma toward Syrian refugees indirectly through narrative engagement, perceived similarity, and meaningful affect. Decreases in stigma also improved attitudes toward refugees. Study 2 replicates these findings against a separate participant pool, an additional story topic, and compares changes in engagement, stigma, and attitude to a non-narrative fact sheet and a control condition. A preregistered third study seeks to validate the finding that narratives can elicit destigmatization and disentangle the roles of story exemplars from story structure.

    Daniel J. Tamul, Jessica C. Hotter, Simine Vazire, Chris Chambers·2019·Collabra: Psychology
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  • Validation of transdermal alcohol concentration data collected using wearable alcohol monitors: A systematic review and meta-analysis

    Objective To evaluate the diagnostic accuracy of transdermal alcohol content (TAC) data (i.e. index test) collected with wearable alcohol monitors for assessment of alcohol use or any other alcohol related outcome (e.g., excessive alcohol use) among adults 18 and older. Methods We will systematically search MEDLINE, EMBASE, PsycINFO, and the Social Sciences Citation Index (SSCI, Web of Science) for TAC validation studies. The reference standards for this systematic review study are alcohol use data collected through self-reports, breathalyzers, or blood samples. If enough studies are available to conduct a meta-analysis, we will use a hierarchical regression approach to pool the results and obtain summary point estimates.

    Sina Kianersi, Maya Luetke, Jon Agley, Ruth Gassman, Christina Ludema, Molly Rosenberg·2020·Drug and Alcohol Dependence
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  • Are we at all liberal at heart? High-powered tests find no effect of intuitive thinking on moral foundations

    Two opposing views define the debate on the moral principles underlying human behavior. One side argues a central role for five moral foundations (care, fairness, loyalty, authority, sanctity), while the other argues that two of these (care, fairness) capture the essence of human moral concerns. In an experiment comparing these two views, Wright and Baril (2011) found that conservatives under cognitive load devalue loyalty, authority and sanctity, and become more liberal. Their finding of common intuitive concern with care and fairness supports the two-foundation perspective. In two high-powered preregistered experiments (N = 3275), we used time-pressure to induce intuitive thinking and tested Wright and Baril's finding that “we are all liberals at heart.” Although the manipulations worked as intended, Study 1 failed to identify an effect on the moral foundations questionnaire (MFQ). We conjectured that familiarity with standard survey items may weaken intuition manipulations by eliciting stable opinions. In Study 2, we therefore used not only the MFQ but also novel moral foundations vignettes. Study 2 failed to find an effect of time-pressure on either questionnaire type. An internal Bayesian meta-analysis indicated strong evidence against an effect of intuitive thinking on moral foundations.

    Ozan Isler, Onurcan Yilmaz, Burak Doğruyol·2021·Journal of Experimental Social Psychology
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  • A creative destruction approach to replication: Implicit work and sex morality across cultures

    How can we maximize what is learned from a replication study? In the creative destruction approach to replication, the original hypothesis is compared not only to the null hypothesis, but also to predictions derived from multiple alternative theoretical accounts of the phenomenon. To this end, new populations and measures are included in the design in addition to the original ones, to help determine which theory best accounts for the results across multiple key outcomes and contexts. The present pre-registered empirical project compared the Implicit Puritanism account of intuitive work and sex morality to theories positing regional, religious, and social class differences; explicit rather than implicit cultural differences in values; self-expression vs. survival values as a key cultural fault line; the general moralization of work; and false positive effects. Contradicting Implicit Puritanism's core theoretical claim of a distinct American work morality, a number of targeted findings replicated across multiple comparison cultures, whereas several failed to replicate in all samples and were identified as likely false positives. No support emerged for theories predicting regional variability and specific individual-differences moderators (religious affiliation, religiosity, and education level). Overall, the results provide evidence that work is intuitively moralized across cultures.

    Warren Tierney, Jay Hardy, Charles R. Ebersole, Domenico Viganola, Elena Giulia Clemente, Michael Gordon, Suzanne Hoogeveen, Julia Haaf, Anna Dreber, Magnus Johannesson, Thomas Pfeiffer, Jason L. Huang, Leigh Ann Vaughn, Kenneth DeMarree, Eric R. Igou, Hanah Chapman, Ana Gantman, Matthew Vanaman, Jordan Wylie, Justin Storbeck, Michael R. Andreychik, Jon McPhetres, Eric Luis Uhlmann·2021·Journal of Experimental Social Psychology
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  • Defending one's worldview under mortality salience: Testing the validity of an established idea

    Terror management theory (TMT) posits that mortality salience (MS) leads to more negative perceptions of persons who oppose one's worldview and to more positive perceptions of persons who confirm one's worldview. Recent failed replications of classic findings have thrown into question empirical validity for this established idea. We believe, that there are crucial methodological and theoretical aspects that have been neglected in these studies which limit their explanatory power; thus, the studies of this registered report aimed to address these issues and to directly test the worldview defense hypothesis. First, we conducted two preregistered lab studies applying the classic worldview defense paradigm. The stimulus material (worldview-confirming and -opposing essays) was previously validated for students at a German university. In both studies, the MS manipulation (between-subjects) was followed by a distraction phase. Then, in Study 1 (N = 131), each participant read both essays (within-subjects). In Study 2 (N = 276), the essays were manipulated between-subjects. Credibility attribution towards the author was assessed as the dependent variable. In both studies, the expected interaction effects were not significant. In a third highly powered (registered) study (N = 1356), we used a previously validated worldview-opposing essay. The five classic worldview defense items served as the main dependent measure. The MS effect was not significant. Bayesian analyses favored the null hypothesis. An internal meta-analysis revealed a very small (Hedges' g = 0.09) but nonsignificant (p = .058) effect of MS. Altogether, the presented studies reveal challenges in providing convincing evidence for this established idea.

    Simon Schindler, Nina Reinhardt, Marc-André Reinhard·2021·Journal of Experimental Social Psychology
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  • Religion, parochialism and intuitive cooperation

    Religions promote cooperation, but they can also be divisive. Is religious cooperation intuitively parochial against atheists? Evidence supporting the social heuristics hypothesis (SHH) suggests that cooperation is intuitive, independent of religious group identity. We tested this prediction in a one-shot prisoner’s dilemma game, where 1,280 practising Christian believers were paired with either a coreligionist or an atheist and where time limits were used to increase reliance on either intuitive or deliberated decisions. We explored another dual-process account of cooperation, the self-control account (SCA), which suggests that visceral reactions tend to be selfish and that cooperation requires deliberation. We found evidence for religious parochialism but no support for SHH’s prediction of intuitive cooperation. Consistent with SCA but requiring confirmation in future studies, exploratory analyses showed that religious parochialism involves decision conflict and concern for strong reciprocity and that deliberation promotes cooperation independent of religious group identity.

    Ozan Isler, Onurcan Yilmaz, A. John Maule·2021·Nature Human Behaviour
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  • A conceptual replication of ambidextrous leadership theory: An experimental approach

    Ambidextrous leadership theory proposes that a leader's interplay between opening behaviors and closing behaviors enhances followers' exploration and exploitation behaviors, which ultimately increases innovative outcomes. Unfortunately, previous research suffers from problems with causal interpretation and endogeneity concerns threatening the validity of the theory. Our aim was to constructively replicate previous research with an experimental design, more rigorous measures, and state-of-the-art data analytical approaches (2SLS). In two randomized experiments (Study 1: N = 395, Study 2: N = 229), we manipulated four leadership styles (opening, closing, ambidextrous, and transformational leadership) and tested their effects on participants' exploration/exploitation behaviors as well as objective innovation outcomes. We only found partial support for the hypotheses from ambidextrous leadership theory. We discuss implications in terms of refining central concepts of the theory and offering more accurate assumptions about timing. We also elaborate on more general insights from our constructive replication studies for the leadership field.

    Florian E. Klonek, Fabiola H. Gerpott, Sharon K. Parker·2023·The Leadership Quarterly
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  • Replication Study: Systematic identification of genomic markers of drug sensitivity in cancer cells

    In 2016, as part of the Reproducibility Project: Cancer Biology, we published a Registered Report (Vanden Heuvel et al., 2016), that described how we intended to replicate selected experiments from the paper ‘Systematic identification of genomic markers of drug sensitivity in cancer cells’ (Garnett et al., 2012). Here we report the results. We found Ewing’s sarcoma cell lines, overall, were more sensitive to the PARP inhibitor olaparib than osteosarcoma cell lines; however, while the effect was in the same direction as the original study (Figure 4C; Garnett et al., 2012), it was not statistically significant. Further, mouse mesenchymal cells transformed with either the EWS-FLI1 or FUS-CHOP rearrangement displayed similar sensitivities to olaparib, whereas the Ewing’s sarcoma cell line SK-N-MC had increased olaparib sensitivity. In the original study, mouse mesenchymal cells transformed with the EWS-FLI1 rearrangement and SK-N-MC cells were found to have similar sensitivities to olaparib, whereas mesenchymal cells transformed with the FUS-CHOP rearrangement displayed a reduced sensitivity to olaparib (Figure 4E; Garnett et al., 2012). We also studied another Ewing’s sarcoma cell line, A673: A673 cells depleted of EWS-FLI1 or a negative control both displayed similar sensitivities to olaparib, whereas the original study reported a decreased sensitivity to olaparib when EWS-FLI1 was depleted (Figure 4F; Garnett et al., 2012). Differences between the original study and this replication attempt, such as the use of different sarcoma cell lines and level of knockdown efficiency, are factors that might have influenced the outcomes. Finally, where possible, we report meta-analyses for each result.

    John P Vanden Heuvel, Ewa Maddox, Samar W Maalouf, Reproducibility Project: Cancer Biology, Joaquín M Espinosa·2018·eLife
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  • Replication Study: The common feature of leukemia-associated IDH1 and IDH2 mutations is a neomorphic enzyme activity converting alpha-ketoglutarate to 2-hydroxyglutarate

    In 2016, as part of the Reproducibility Project: Cancer Biology, we published a Registered Report (Fiehn et al., 2016), that described how we intended to replicate selected experiments from the paper "The common feature of leukemia-associated IDH1 and IDH2 mutations is a neomorphic enzyme activity converting alpha-ketoglutarate to 2-hydroxyglutarate" (Ward et al., 2010). Here, we report the results of those experiments. We found that cells expressing R172K mutant IDH2 did not display isocitrate-dependent NADPH production above vector control levels, in contrast to the increased production observed with wild-type IDH2. Conversely, expression of R172K mutant IDH2 resulted in increased alpha-ketoglutarate-dependent consumption of NADPH compared to wild-type IDH2 or vector control. These results are similar to those reported in the original study (Figure 2; Ward et al., 2010). Further, expression of R172K mutant IDH2 resulted in increased 2HG levels within cells compared to the background levels observed in wild-type IDH2 and vector control, similar to the original study (Figure 3D; Ward et al., 2010). In primary human AML samples, the 2HG levels observed in samples with mutant IDH1 or IDH2 status were higher than those observed in samples without an IDH mutation, similar to what was observed in the original study (Figure 5C; Ward et al., 2010). Finally, we report meta-analyses for each result.

    Megan Reed Showalter, Jason Hatakeyama, Tomas Cajka, Kacey VanderVorst, Kermit L, III Carraway, Oliver Fiehn, Reproducibility Project: Cancer Biology, Jessica K Tyler·2017·eLife
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  • Replication Study: Transcriptional amplification in tumor cells with elevated c-Myc

    As part of the Reproducibility Project: Cancer Biology, we published a Registered Report (Blum et al., 2015), that described how we intended to replicate selected experiments from the paper ‘Transcriptional amplification in tumor cells with elevated c-Myc’ (Lin et al., 2012). Here we report the results. We found overexpression of c-Myc increased total levels of RNA in P493-6 Burkitt’s lymphoma cells; however, while the effect was in the same direction as the original study (Figure 3E; Lin et al., 2012), statistical significance and the size of the effect varied between the original study and the two different lots of serum tested in this replication. Digital gene expression analysis for a set of genes was also performed on P493-6 cells before and after c-Myc overexpression. Transcripts from genes that were active before c-Myc induction increased in expression following c-Myc overexpression, similar to the original study (Figure 3F; Lin et al., 2012). Transcripts from genes that were silent before c-Myc induction also increased in expression following c-Myc overexpression, while the original study concluded elevated c-Myc had no effect on silent genes (Figure 3F; Lin et al., 2012). Treating the data as paired, we found a statistically significant increase in gene expression for both active and silent genes upon c-Myc induction, with the change in gene expression greater for active genes compared to silent genes. Finally, we report meta-analyses for each result.

    L Michelle Lewis, Meredith C Edwards, Zachary R Meyers, C Conover, Jr Talbot, Haiping Hao, David Blum, Reproducibility Project: Cancer Biology, Michael R Green·2018·eLife
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  • Self-insight into emotional and cognitive abilities is not related to higher adjustment

    Despite the popularity of the Ancient Greek maxim ‘know thyself’, the importance of self-insight for adjustment, or effective psychological functioning, remains unclear. Here we examined four perspectives about how cognitive and emotional abilities and self-views about these abilities relate to adjustment. We administered tests of cognitive and emotional abilities and assessed self-views about these abilities. Participants then completed daily diaries for a week to report multiple self-reported indicators of adjustment. We analysed data using polynomial regression and response surface analysis. We found no support for benefits of self-insight. The conditions to infer support for linear or curvilinear associations between abilities or self-views about these abilities and adjustment were also not met. The findings suggest that giving employees and students feedback about their cognitive and emotional abilities in organizations and in schools may not enhance their adjustment. We discuss the limitations of our study and offer suggestions for future research.

    Joyce C. He, Stéphane Côté·2019·Nature Human Behaviour
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  • Sex Differences in Distress From Infidelity in Early Adulthood and in Later Life

    Shackelford and colleagues (2004) found that men, compared to women, are more distressed by sexual than emotional infidelity, and this sex difference continued into older age. We conducted four hig...

    Hans IJzerman, Irene Blanken, Mark J. Brandt, J. M. Oerlemans, Marloes M. W. Van den Hoogenhof, Stephanie J. M. Franken, Mathe W. G. Oerlemans·2014·Social Psychology
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  • Sex, Drugs, and Bitcoin: How Much Illegal Activity Is Financed through Cryptocurrencies?

    Cryptocurrencies are among the largest unregulated markets in the world. We find that approximately one-quarter of bitcoin users are involved in illegal activity. We estimate that around $76 billion of illegal activity per year involve bitcoin (46% of bitcoin transactions), which is close to the scale of the U.S. and European markets for illegal drugs. The illegal share of bitcoin activity declines with mainstream interest in bitcoin and with the emergence of more opaque cryptocurrencies. The techniques developed in this paper have applications in cryptocurrency surveillance. Our findings suggest that cryptocurrencies are transforming the black markets by enabling “black e-commerce.”Received June 1, 2017; editorial decision December 8, 2018 by Editor Andrew Karolyi. Authors have furnished an Internet Appendix, which is available on the Oxford University Press Web site next to the link to the final published paper online.

    Sean Foley, Jonathan R Karlsen, Tālis J Putniņš·2019·The Review of Financial Studies
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  • The Affect Misattribution Procedure

    . The Affect Misattribution Procedure (AMP) has been forwarded as one of the most promising alternatives to the Implicit Association Test and the evaluative-priming task for measuring attitudes such as prejudice indirectly. We investigated whether the AMP is indeed able to detect an evaluative out-group bias. In contrast to recent conclusions about the robustness of AMP effects, six out of seven pilot studies indicated that participants did not show any prejudice effects in the AMP. Yet, these pilot studies were not fully conclusive with regard to our research question because they investigated different domains of prejudice, used small sample sizes, and employed a modified AMP version. In a preregistered, high-powered AMP study, we therefore examined whether the standard AMP does reveal prejudice against Turks, the biggest minority in Germany, and found a significant, albeit very small prejudice effect. We discuss possible reasons for the AMP’s weak sensitivity to evaluations in socially sensitive domains.

    Sarah Teige-Mocigemba, Manuel Becker, Jeffrey W. Sherman, Regina Reichardt, Karl Christoph Klauer·2017·Experimental Psychology
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  • The Effect of Cognitive Control on Different Types of Auditory Distraction

    . Deviant as well as changing auditory distractors interfere with short-term memory. According to the duplex model of auditory distraction, the deviation effect is caused by a shift of attention while the changing-state effect is due to obligatory order processing. This theory predicts that foreknowledge should reduce the deviation effect, but should have no effect on the changing-state effect. We compared the effect of foreknowledge on the two phenomena directly within the same experiment. In a pilot study, specific foreknowledge was impotent in reducing either the changing-state effect or the deviation effect, but it reduced disruption by sentential speech, suggesting that the effects of foreknowledge on auditory distraction may increase with the complexity of the stimulus material. Given the unexpected nature of this finding, we tested whether the same finding would be obtained in (a) a direct preregistered replication in Germany and (b) an additional replication with translated stimulus materials in Sweden.

    Raoul Bell, Jan P. Röer, John E. Marsh, Dunja Storch, Axel Buchner·2017·Experimental Psychology
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  • The role of credibility in the relation between management forecasts and analyst forecasts in Japan

    This study examines the relation between management forecasts and analysts' forecasts to determine whether a moderating role exists for credibility. Management credibility is evaluated by management's prior forecasting ability and the firm's underlying corporate governance structure. Analyst credibility on the other hand is assessed using their prior forecasting ability only. Using Structural Equation Modelling, we find management credibility affects how much reliance analysts place upon information contained in management initial earnings forecasts when making their own forecasts. We also show a moderating role for analyst credibility in the relation between analysts' consensus initial forecasts and management forecast revisions. Our findings highlight the importance of reputation in the dissemination of earnings information.

    Hiroyuki Aman, Wendy Beekes, Millicent Chang, Marvin Wee·2019·Pacific-Basin Finance Journal
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  • The role of vigilance in the relationship between neuroticism and health: A registered report

    The theory of healthy neuroticism, that neuroticism can impact health through both negative and positive pathways, often relies on descriptions of vigilance to illustrate beneficial effects. The current study is among the first to describe the relationship of neuroticism to body vigilance and test the degree to which this relationship impacts health. In an online participant panel (N = 1055), neuroticism was associated with one factor of vigilance: sensation awareness belief. This factor had a suppression effect on the relationship between neuroticism and healthy behavior, such that the effect of neuroticism through vigilance was healthy, whereas the direct effect was unhealthy. We discuss the implications of these findings and caution against using vigilance to explain the heterogeneity in neuroticism-health relationships.

    Sara J. Weston, Joshua J. Jackson·2018·Journal of Research in Personality
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  • The wealth effects of the announcement of the Australian carbon pricing scheme

    In this study, we examine the wealth effects associated with the announcement of the Australian Carbon Pricing Scheme (the “carbon tax”), made by the then Prime Minster Julia Gillard on 24 February 2011. Building on studies that use the event study method originally developed by Fama et al. (1969) and Ball and Brown (1968), we propose a novel approach to analyzing announcements with unresolved uncertainty. With this approach, we separate out the news effect and the value effect associated with the announcement of the Australian Carbon Pricing Scheme. Our findings show that the average news effect associated with the announcement is 1.11% (A$254 million dollars), indicating that the market was favorably disposed towards the news that the government was taking action on climate change. The average value effect was −4.46% (−A$1.12 billion dollars), indicating that the scheme destroyed significant value for existing firms. The announcement of the Australian Carbon Pricing Scheme was more value-destructive for carbon-intensive firms (−6.97%) than for the other firms (−3.67%). The method presented in this study can be applied to any policy announcements with unresolved uncertainty

    Jianlei Han, Martina K. Linnenluecke, Zheyao (Terry) Pan, Tom Smith·2019·Pacific-Basin Finance Journal
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  • Thriving in midlife: The roles of childhood nurturance and adult defense mechanisms

    The current study examined whether reliance on more adaptive defense mechanisms throughout early adulthood may help explain previously documented relationships between childhood nurturance and better midlife functioning. Utilizing a unique longitudinal study, data were from age 18 through midlife (age 63) on 135 males. Childhood nurturance was assessed upon study entry and defense mechanism usage was assessed throughout earlier adulthood. Percentage of ‘engaging’ (more adaptive) vs. ‘avoidant’ (less adaptive) defenses mediated the relationship between childhood nurturance and 3 midlife outcomes: participants’ relationship quality with their children, marriage stability, and maximum earned income. Results suggest that greater childhood nurturance relates to more adaptive defensive styles in early adulthood, which is then associated with healthier midlife functioning at work and in relationships.

    Michael D. Nevarez, Melinda I. Morrill, Robert J. Waldinger·2018·Journal of Research in Personality
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  • Unconscious deception detection measured by finger skin temperature and indirect veracity judgments—results of a registered report

    A pre-registered experiment was conducted to examine psychophysiological responses to being lied to. Bridging research on social cognition and deception detection, we hypothesized that observing a liar compared to a truth-teller would decrease finger skin temperature of observers. Participants first watched two targets while not forewarned that they would later be asked to judge (direct and indirect) veracity, and then watched another two targets while forewarned about this. During both these phases finger skin temperature was measured. Findings pertaining to temperature partly confirmed our main hypothesis. When participants were observing a liar, irrespective of being forewarned, on average finger skin temperature declined over time. In the forewarned phase, temperature trajectories of truth-tellers were higher than those of liars, however, in the not forewarned phase, this pattern was reversed. Results confirmed our further hypotheses that participants judge liars as less likeable and less trustworthy than truth-tellers—an indication of indirect deception detection. Our hypothesis that the effect size for trustworthiness would be bigger than that of liking was not supported by the data. Additionally, and also confirming our hypothesis, participants performed around chance level when directly judging whether the target person was lying. Exploratory analyses are reported with regard to truth bias and dependency between direct and indirect veracity judgments. Limitations and directions for future work related to the existence of psychophysiological indicators of deception detection are discussed.

    Anna E. van ’t Veer, Marcello Gallucci, Mariëlle Stel, Ilja van Beest·2015·Frontiers in Psychology
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  • Effects of roadside memorials on drivers’ risk perception and eye movements

    Road crashes are a leading cause of death worldwide. In many countries, it is common to see spontaneous roadside memorials constructed in response to road fatalities. These memorials are controversial and are explicitly banned in many jurisdictions. Advocates argue that the presence of memorials improves safety by making other drivers aware of an especially dangerous road where others have died, whereas opponents argue that they are distracting and decrease safety by diverting drivers’ attention away from the road. However, there has been almost no research examining the effects of roadside memorials on road user behavior and safety. In this study, 40 drivers viewed videos of road scenes with and without memorials, to examine how the presence of roadside memorials influences drivers’ attentional allocation (indicated by eye movements to the roadside area) and safety-related behaviors (indicated by perceived risk ratings and preferred travel speeds for the road). The findings indicate memorials do capture visual attention, as participants were more likely to fixate on memorials compared with a comparison object placed on the roadside. However, fixations on the memorials, and to the roadside area in general, were relatively brief. The presence of memorials did not affect perceived risk and did not produce a clear systematic effect on preferred travel speed. Nearly all drivers in our study supported permitting roadside memorials, but a small number strongly opposed memorials on the belief they are distracting and/or distressing.

    Vanessa Beanland, Rachael A. Wynne·2019·Cognitive Research: Principles and Implications
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  • Offloading items from memory: individual differences in cognitive offloading in a short-term memory task

    Cognitive offloading refers to the act of reducing the mental processing requirements of a task through physical actions like writing down information or storing information on a cell phone or computer. Offloading can lead to improved performance on ongoing tasks with high cognitive demand, such as tasks where multiple pieces of information must be simultaneously maintained. However, less is known about why some individuals choose to engage in offloading and under what conditions they might choose to do so. In the present study, offloading behavior is investigated in a short-term memory task requiring memory for letters. The present study is a replication and extension of a previous study conducted by Risko and Dunn, and tests the new prediction that individuals with lower working memory capacity will be more likely to offload. Here, we find that offloading information confers a performance advantage over relying on internal memory stores, particularly at higher memory loads. However, we fail to observe that those with poorer memory abilities have a greater propensity for offloading or benefit more from it. Instead, our findings suggest that cognitive offloading may be a valid compensatory strategy to improve performance of memory-based tasks for individuals with a wide range of memory ability.

    Alexandra B. Morrison, Lauren L. Richmond·2020·Cognitive Research: Principles and Implications
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  • Who is prone to wander and when? Examining an integrative effect of working memory capacity and mindfulness trait on mind wandering under different task loads

    We proposed an integration hypothesis of mind wandering in which the tendency of mind wandering is only related to working memory capacity (WMC) when a self-regulation process is required (i.e., under a high task load); however, this tendency is related to mindfulness regardless of task load. A within-group experiment with 160 participants was conducted. Task load was manipulated as high or low using modified 0-back and 2-back tasks, during which participants’ self-caught mind wanderings and the types of mind wandering (aware vs. unaware; intentional vs. unintentional) were measured. The results supported our hypothesis that WMC was negatively associated with mind wandering only in demanding tasks, and mindfulness scores were negatively associated with mind wandering across tasks. Furthermore, we also determined how WMC and the mindfulness trait were related to different types of mind wandering. Theoretical implications were discussed.

    Yu-Jeng Ju, Yunn-Wen Lien·2018·Consciousness and Cognition
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  • Emerging Adulthood MoA/IDEA-8 Scale Characteristics From Multiple Institutions

    We tested psychometric properties of the Markers of Adulthood (MoA) importance scale and a revised Inventory of the Dimensions of Emerging Adulthood (IDEA-8) in a large, diverse multisite and multinational sample the Emerging Adulthood Measured at Multiple Institutions 2 project. We used multilevel confirmatory factor analyses and multilevel alphas to examine external validity and internal consistency of the scales. We also performed correlational and exploratory multilevel analyses to determine the extent to which emerging adulthood dimensions overlap across scales. The IDEA-8 subscales demonstrated acceptable psychometric properties. Our research suggests that recent approaches to combine the MoA markers provide four modestly reliable factors, but perceptions of adulthood varied considerably as a function of sample. We recommend that the structure of these marker items be examined for any given sample, since their relative importance seems to vary, not just across time but also sample location.

    Caitlin Faas, Joseph McFall, Justin W. Peer, Matthew T. Schmolesky, Holly M. Chalk, Anthony Hermann, William J. Chopik, Dana C. Leighton, Julie Lazzara, Andrew Kemp, Vicki DiLillio, Jon Grahe·2020·Emerging Adulthood
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  • Political Extremity, Social Media Use, Social Support, and Well-Being for Emerging Adults During the 2016 Presidential Election Campaign

    The 2016 U.S. presidential election was marked by hostile political discourse, often on social media, where users were exposed to divergent, and potentially distressing, political discourse. This research explores the effects of this election on the well-being of emerging adults who receive the majority of their news via social media. Using data from the Emerging Adulthood Measured at Multiple Institutions 2 Study, we expected greater social media use to be associated with greater perceived stress, and lower well-being, among emerging adults who are more politically extreme, and expected these relationships would be moderated by social support and social media use. Our preregistered analysis did not support our hypotheses. Although there were some effects of extremity on stress and well-being, overall the direction of the effects were inconsistent and neither social media use nor social support was found to moderate the effects of extremity on stress and well-being.

    Dana C. Leighton, Mark J. Brandt, Lindsay A. Kennedy·2020·Emerging Adulthood
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  • Registered Report: Transcriptional Analysis of Savings Memory Suggests Forgetting is Due to Retrieval Failure

    There is fundamental debate about the nature of forgetting: some have argued that it represents the decay of the memory trace, others that the memory trace persists but becomes inaccessible because of retrieval failure. These different accounts of forgetting lead to different predictions about savings memory, the rapid re-learning of seemingly forgotten information. If forgetting is because of decay, then savings requires re-encoding and should thus involve the same mechanisms as initial learning. If forgetting is because of retrieval failure, then savings should be mechanistically distinct from encoding. In this registered report, we conducted a preregistered and rigorous test between these accounts of forgetting. Specifically, we used microarray to characterize the transcriptional correlates of a new memory (1 d after training), a forgotten memory (8 d after training), and a savings memory (8 d after training but with a reminder on day 7 to evoke a long-term savings memory) for sensitization in Aplysia californica (n = 8 samples/group). We found that the reactivation of sensitization during savings does not involve a substantial transcriptional response. Thus, savings is transcriptionally distinct relative to a newer (1-d-old) memory, with no coregulated transcripts, negligible similarity in regulation-ranked ordering of transcripts, and a negligible correlation in training-induced changes in gene expression (r = 0.04 95% confidence interval (CI) [–0.12, 0.20]). Overall, our results suggest that forgetting of sensitization memory represents retrieval failure.

    Tania Rosiles, Melissa Nguyen, Monica Duron, Annette Garcia, George Garcia, Hannah Gordon, Lorena Juarez, Irina E. Calin-Jageman, Robert J. Calin-Jageman·2020·eNeuro
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  • Merging Structural and Process–Related Approaches to the Study of Agreeableness: A Preregistered Replication and Extension Attempt

    Agreeableness is one of the major domains included within prominent hierarchical models of personality like the five–factor model. (Low) agreeableness is the strongest correlate of a variety of antisocial behaviours relative to the other five–factor model domains. Although there is substantial evidence that (low) agreeableness is arguably the most important personality correlate of various antisocial behaviours, this evidence is descriptive and provides little information on the direction or processes underlying the relation. Process–related research has started to provide more insight into how agreeableness–related traits give rise to various antisocial and prosocial behaviours. The proposed study looked to first replicate previous research on some of the potential cognitive–emotional processes related to agreeableness and then conduct exploratory analyses to identify which, if any, of the empirically identified facets of agreeableness bear specific relations to the processes under study. Overall, we were unable to replicate the primary effects of interest in regard to processes of agreeableness and found little support for our preregistered confirmatory and exploratory hypotheses despite having high power (≥.94) to detect these effects. Nonetheless, process models of personality remain at the vanguard of personality research, and we discuss how the current results can inform future work in this area. © 2020 European Association of Personality Psychology

    Colin E. Vize, Donald R. Lynam·2020·European Journal of Personality
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  • It's my idea! Reputation management and idea appropriation

    Accurately assessing others' reputation, and developing a reputation as a competent, honest, fair individual—a good epistemic and moral reputation—are critical skills. In six online experiments (N = 2811), replicated with English and Japanese participants, we found that one way to improve our epistemic reputation is to display our competence by sharing valuable ideas, especially if we appropriate these ideas—i.e. present them as being our own, and not someone else's, whether that is the case or not (H1). But idea appropriation also entails some risks, otherwise it would lose its quality as a reliable signal. In particular, appropriating a bad idea damages one's epistemic reputation (H2), and being caught appropriating someone else's idea damages one's moral reputation (H3). As a consequence, people are more likely to appropriate good ideas when they are motivated to display their competence (H4), and less likely to do so when the odds of getting caught increase (H5). The way people negotiate the tradeoffs of reputation management as they communicate can help explain the spread of information, as well as misinformation.

    Sacha Altay, Yoshimasa Majima, Hugo Mercier·2020·Evolution and Human Behavior
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  • The “Mnemonic Time-Travel Effect”

    . This registered report aims at replicating the so-called “mnemonic time-travel” effect. Aksentijevic, Brandt, Tsakanikos, and Thorpe (2019) reported that memory was improved when their participants experienced backward motion before a memory test in comparison to when they experienced forward motion or no motion. This finding was interpreted as suggesting that backward motion brought individuals back to the moment of encoding. In the original study, the mnemonic time-travel effect was robustly found with various types of backward motion (real, simulated, and imagined). Such a spectacular finding calls for a preregistered replication. To determine the robustness of the effect, we performed a close replication of Experiment 4 of Aksentijevic et al. in which the mnemonic time-travel effect was most pronounced. Despite sufficient statistical power to detect an even considerably smaller effect than the one reported by Aksentijevic et al., we found no significant differences among the different motion conditions. The present results thus disconfirm the idea that experiencing backward motion improves memory which suggests that the empirical robustness of the mnemonic time travel effect should be further scrutinized before any conclusions about mnemonic space and time can be drawn.

    Laura Mieth, Raoul Bell, Axel Buchner·2019·Experimental Psychology
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  • Stage 2 Registered Report: How subtle linguistic cues prevent unethical behaviors

    Background: Differences in descriptions can influence people’s evaluations and behaviors. A previous study by Bryan and colleagues suggested that subtle linguistic differences in ethical reminders can differentially prevent readers’ unethical behavior. The present study tried to replicate the previous finding in the Japanese context (Experiment 1); additionally, we explored the influence of unfamiliar Japanese instruction words that captured participants’ attention (Experiment 2). Methods: In two online experiments, participants were asked to make 10 coin-tosses and report the number of “heads” results, which would indicate the amount of money that they could earn. In Experiment 1, we analyzed the difference in the number of “heads” results as reported by 768 participants under three conditions with different instructions (“Don’t cheat” vs. “Don’t be a cheater” vs. baseline as a control). In Experiment 2, we conducted an extended experiment with an additional task in which more attention was directed toward the text. Results: In Experiment 1, we successfully replicated the results of the original experiment. The results of Experiment 2 showed no evidence that the results in Experiment 1 were influenced by attentional factors. Conclusions: In conclusion, the results of the present study supported the hypothesis that self-identity-related words of moral reminder curb unethical behaviors more effectively. Stage 1 report: https://doi.org/10.12688/f1000research.20183.4

    Wen Guo, Huanxu Liu, Jingwen Yang, Yuqi Mo, Can Zhong, Yuki Yamada·2020
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  • Nature as a potential modulator of the error-related negativity: A registered report

    According to Kaplan's Theory of Attention Restoration (ART), spending time in a natural environment can restore depleted cognitive resources. If this is true, then nature exposure may modulate the error-related negativity (ERN), a component of the event-related brain potential (ERP) that is related to cognitive control and attentional allocation. ART suggests that cognitive resources are restored because the cognitive control networks of the brain are less engaged in nature, suggesting that the ERN may decrease in nature. In the present study, we completed a registered report, examining whether or not spending time in nature would reduce the size of the ERN compared to outdoor testing. Instead, we found that nature significantly increased the amplitude of the ERN. The implications of these results are discussed within the ART framework.

    Sara B. LoTemplio, Emily E. Scott, Amy S. McDonnell, Rachel J. Hopman, Spencer C. Castro, G. David McNay, Ty L. McKinney, Kevin Greenberg, Brennan R. Payne, David L. Strayer·2020·International Journal of Psychophysiology
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  • Examining Whether Semantic Cues Can Affect Felt Heaviness When Lifting Novel Objects

    It is well established that manipulations of low-level stimulus properties unrelated to mass can impact perception of heaviness, the most famous example being the size-weight illusion whereby small objects feel heavier than equally-weighted larger objects. Interestingly, manipulations of high-level cues such as material have also induced weight illusions, highlighting that cognitive expectations alone are enough to create illusory weight differences. Less is known, however, about what type of cognitive expectations can influence perception of heaviness. As labels are often used to signify the heaviness of objects, this study examined whether semantic cues could induce a novel weight illusion. Participants lifted equally-sized and equally-weighted sets of objects labelled as ‘light’ and ‘heavy’ and reported their perceived heaviness both prior to and after lifting. Fingertip forces were also measured to understand how semantic cues may influence sensorimotor prediction. The labels clearly affected pre-lift-off expectations of heaviness. By contrast, we found no effect of these labels on the perceived heaviness of objects, nor on the forces used to grip and lift them on early trials. In other words, we find no evidence that semantic cues affect perception or action enough to induce a novel weight illusion. These findings suggest that the explicit expectations created by the labels did not dominate the implicit expectations created by the equal sizes of the objects, highlighting the segregated nature of cognitive expectations and their variable influences on perception and action.

    Caitlin Elisabeth Naylor, T. J. Power, Gavin Buckingham·2020·Journal of Cognition
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  • The moral landscape of war: A registered report testing how the war context shapes morality's constraints on default representations of possibility

    Mental representations of possibility in everyday contexts incorporate descriptive and prescriptive norms. People intuitively think that Mr. X cannot perform an immoral action; even when upon deliberation they realize that the immoral action is in fact possible (Phillips & Cushman, 2017). We replicate this “moral-possibility constraint”, providing further support for the notion that default representations of possibility are - at first pass - limited to moral alternatives. We also test how context affects representations of possibility by asking whether the same findings hold in a war context. This context has different prescriptive norms (e.g., it is permissible to kill combatants, but not non-combatants), and we use Phillips and Cushman's (2017) reaction-time paradigm to test whether these prescriptive norms shape people's representations of what is possible in war. We find that the moral-possibility constraint is sensitive to variation in degree of immorality (e.g., killing a person vs. torturing a child); however the war context did not influence the constraint in the way we expected. The results further advance our understanding of the relationship between morality and domain-general cognition, and provide insight into the moral landscape of war.

    Hanne M. Watkins, Mark Brandt·2019·Journal of Experimental Social Psychology
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  • Inequality in the minimal group paradigm: How relative wealth and its justification influence ingroup bias

    This article details a registered report for a well-powered (N = 1500) experiment examining the influence of wealth inequality between groups on ingroup bias, as well as the potential moderating role of justification for the wealth distribution. Using the Minimal Group Paradigm, in which participants are assigned to groups with anonymous others and asked to allocate resources to ingroup or outgroup members, we randomly assigned participants to a relatively disadvantaged or a relatively advantaged group. Group assignments were ostensibly based on chance (weak justification), performance on a financial decision-making task (strong justification), or an ambiguous combination of the two (ambiguous justification). As expected, we found evidence for an inequity aversion hypothesis, with disadvantaged participants displaying heightened ingroup bias compared to their advantaged counterparts. Interestingly, however, our predictions regarding the moderating role of justification were not supported, with disadvantaged participants displaying the highest ingroup bias when the inequality was ambiguously justified. We discuss implications of these results for understanding the causal factors underlying ingroup bias.

    P. Connor, D. Stancato, U. Yildirim, S. Lee, S. Chen·2020·Journal of Experimental Social Psychology
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  • Playing a different game: Situation perception mediates framing effects on cooperative behaviour

    Context frames such as describing a Prisoner's Dilemma as a “community” or a “stock exchange” game cause significant variation in cooperative behaviour. Here, we draw on recent advances in research on situation construal to propose that perceived conflict of interests is a mechanism underlying framing effects on cooperation in experimental games. Specifically, we argue that people readily think about situations in terms of conflicts of interests, and how people perceive the conflict of interests in different games predicts differences in cooperation across these games. In a formal model, we show that variation in perceived conflict of interests can affect cooperative decisions even when first-order beliefs and social preferences are static. We test this model across two studies (total N = 1615). In each study, we elicited situation perceptions and beliefs about others' behaviour in a framed game. The basic framing effect replicated in a dichotomous-choice Prisoner's Dilemma (study 1), but not in a continuous-choice Prisoner's Dilemma (study 2). Perceptions of conflict of interests mediated between framing and cooperative behaviour, whereas beliefs and preferences did not. Exploratorily, perceptions of conflict of interests had a causal effect on cooperative behaviour when induced orthogonally to the frame. This study provides evidence for perceptions of conflict of interests as a mechanism underlying framing effects and integrates framing effects with the wider literature on situation perception. Moreover, it supports a causal role of situation perception in social decision-making. However, the results also call into question the generalisability of framing effects.

    Simon Columbus, Jiří Münich, Fabiola H. Gerpott·2020·Journal of Experimental Social Psychology
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  • Experience, Resistance, and Enactment of Desires: Differential Relationships With Trait Measures Predicting Self-Control

    Past research suggests that trait self-control, trait mindfulness, and implicit theories about willpower contribute to self-control, however, their incremental value for this adaptive capacity is unknown. Applying the four-step model of motivated behavior (Hofmann, Baumeister, Förster, & Vohs, 2012), we assessed the frequency of desire experience, resistance, and enactment in everyday life. Results of two highly-powered correlational studies (Study 1: n = 273, Study 2: n = 465) suggest that higher trait self-control is associated with a less frequent experience of desires, higher trait mindfulness with less frequent desire resistance, and a nonlimited theory about willpower is associated with a less frequent enactment of desires. These findings suggest that the traits studied contribute to successful self-control in different ways.

    Katharina Bernecker, Veronika Job, Wilhelm Hofmann·2018·Journal of Research in Personality
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  • Analysis of a mindset intervention

    Mindset refers to a person’s beliefs about the nature of their abilities—whether they believe their ability in a given domain is malleable or fixed. We investigated whether a brief, online intervention could alter ability and non-ability traits, including mindset of intelligence, locus of control, challenge-approach motivation, grit, and performance on cognitive ability tests. Exploratory factor analysis indicated that measures of mindset, grit, and locus of control loaded onto a common self-determination factor, which was independent of a second factor reflecting fluid intelligence and crystallized intelligence. Multilevel modeling further revealed that participants who received a mindset intervention reported more growth mindset, internal locus of control, challenge-approach motivation, and self-determination. The mindset intervention did not alter cognitive ability scores or grittiness.

    Alexander P. Burgoyne, David Z. Hambrick, Jason S. Moser, S. Alexandra Burt·2018·Journal of Research in Personality
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  • Twigs on the same branch? Identifying personality profiles in police officers using psychopathic personality traits

    Recent high-profile incidents reignited the conversation about psychopathic traits in police officers. Psychopathy is characterized by multiple variants: primary and secondary psychopathy. There is limited research examining psychopathy in populations that may exhibit adaptive psychopathic traits. This study used model-based cluster analyses of high psychopathy scorers to investigate psychopathic subtypes in an urban police sample. Relative to the primary subtype, the secondary group displayed higher levels of Self-Centered Impulsivity, trait anxiety, covert narcissism, borderline personality disorder traits, substance use, psychiatric treatment, and aggression. These findings support the concept of successful psychopathy and the existence of psychopathy profiles in police officers, providing a useful look at how successful psychopathy may manifest as well as implications for the criminal justice system and police departments.

    Diana M. Falkenbach, Erin Glackin, Sean McKinley·2018·Journal of Research in Personality
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  • Dark personality voters find dark politicians more relatable and fit for office

    We tested the scope of the congruency model of political preference by examining how people high in various dark personalities evaluate political candidates with dark characteristics. In Study 1, participants high in dark personalities reported enhanced self-possession of dark characteristics and, in general, more tolerance of those characteristics in politicians. In Study 2, although participants viewed a wholesome (vs. dark) politician as more similar to the self and likeable, this effect diminished as participants indicated greater possession of dark personalities. Exploratory analyses involving other perceiver traits (self-esteem, political conservatism/liberalism) yielded additional insights about tolerance for dark politicians. Findings contribute to understanding how people high in dark personalities evaluate others and offer a novel perspective on similarity-liking effects in candidate evaluation.

    William Hart, Kyle Richardson, Gregory K. Tortoriello·2018·Journal of Research in Personality
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  • Selfies reflect actual personality – Just like photos or short videos in standardized lab conditions

    Social media sites are overflowing with millions of selfies, because people increasingly share what they do and who they are with the rest of the world. We examined whether self-expressions based on selfies elicit enhanced, consensual and accurate interpersonal perceptions compared to commonly employed laboratory conditions. Perceived narcissism was relatively higher and conscientiousness lower when ratings were based on selfies. This effect did not extend to the accuracy of ratings: Across all conditions, unacquainted observers agreed with each other and their ratings were correlated with a criterion measure of target personality. Except for agreeableness and self-esteem, accuracy correlations were somewhat higher when ratings were based on selfies. Randomization-based exploratory lens-model analyses were conducted to bolster the interpretation of our results.

    Aleksandra Kaurin, Lutz Heil, Michèle Wessa, Boris Egloff, Sarah Hirschmüller·2018·Journal of Research in Personality
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  • The declining marginal utility of social time for subjective well-being

    Are people who spend more time with others always happier than those who spend less time in social activities? Across four studies with more than 250,000 participants, we show that social time has declining marginal utility for subjective well-being. In Study 1 (N = 243,075), we use the Gallup World Poll with people from 166 countries, and in Study 2 (N = 10,387) the American Time Use Survey (ATUS), to show that social time has declining returns for well-being. In Study 3a (N = 168) and Study 3b (N = 174), we employ the Experience Sampling Method (ESM) to provide initial evidence for both intra-domain (principle of diminishing satisfaction) and inter-domain mechanisms (principle of satisfaction limits). We discuss implications for theory, research methodology, and practice.

    Kostadin Kushlev, Samantha J. Heintzelman, Shigehiro Oishi, Ed Diener·2018·Journal of Research in Personality
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  • Attachment and perceived authenticity across relationship domains: A latent variable decomposition of the ECR-RS

    Although prior studies have investigated authenticity and attachment across a variety of relationships, published research has yet to simultaneously investigate these constructs across multiple domains. American adults (N = 391) responded to a modified version of the Relationship Structures Questionnaire assessing four relationships (mother, father, romantic partner, friend) that included measures of attachment, self and perceived other authenticity, as well as interpersonal trust, need satisfaction and social support. A novel application of latent variable modeling provided more precise estimates of the role-specific regressions. As expected, self and other authenticity contributed to positive relationship outcomes, independent of attachment, suggesting that although the attachment system continues to shape interactions with close others across adult relationship domains, perceived authenticity often uniquely predicts relationship outcomes.

    Robert E. Wickham, Stacie L. Warren, David E. Reed, Megan K. Matsumoto·2018·Journal of Research in Personality
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  • Evaluating modified diets and dietary supplement therapies for reducing muscle lipid accumulation and improving muscle function in neurofibromatosis type 1 (NF1)

    Neurofibromatosis type 1 (NF1) is a genetic disorder that affects a range of tissue systems, however the associated muscle weakness and fatigability can have a profound impact on quality of life. Prior studies using the limb-specific Nf1 knockout mouse (Nf1Prx1-/-) revealed an accumulation of intramyocellular lipid (IMCL) that could be rescued by a diet supplemented with L-carnitine and enriched for medium-chain fatty acids (MCFAs). In this study we used the Nf1Prx1-/- mouse to model a range of dietary interventions designed to reduce IMCL accumulation, and analyze using other modalities including in situ muscle physiology and lipid mass spectrometry. Histological IMCL accumulation was significantly reduced by a range of treatments including L-carnitine and high MCFAs alone. A low-fat diet did not affect IMCL, but did provide improvements to muscle strength. Supplementation yielded rapid improvements in IMCL within 4 weeks, but were lost once treatment was discontinued. In situ muscle measurements were highly variable in Nf1Prx1-/- mice, attributable to the severe phenotype present in this model, with fusion of the hips and an overall small hind limb muscle size. Lipidome analysis enabled segregation of the normal and modified chow diets, and fatty acid data suggested increased muscle lipolysis with the intervention. Acylcarnitines were also affected, suggestive of a mitochondrial fatty acid oxidation disorder. These data support the theory that NF1 is a lipid storage disease that can be treated by dietary intervention, and encourages future human trials.

    Emily R. Vasiljevski, Peter J. Houweling, Thusitha Rupasinghe, Tarneet Kaur, Matthew A. Summers, Ute Roessner, David G. Little, Aaron Schindeler·2020·PLOS ONE
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  • The affective priming paradigm as an indirect measure of food attitudes and related choice behaviour

    In this Registered Report, we assessed the utility of the affective priming paradigm (APP) as an indirect measure of food attitudes and related choice behaviour in two separate cohorts. Participants undertook a speeded evaluative categorization task in which target words were preceded by food primes that differed in terms of affective congruence with the target, explicit liking (most liked or least liked), and healthiness (healthy or unhealthy). Non-food priming effects were tested as a manipulation check, and the relationship between food priming effects and impulsive choice behaviour was also investigated using a binary food choice task. As predicted, priming effects were observed for both healthy and unhealthy foods, but there was no difference in the magnitude of these effects. This may suggest that the paradigm is most sensitive to affective, but not cognitive, components of attitudes (i.e., healthiness), but alternative theoretical explanations and implications of this finding are discussed. Food and non-food priming effects were observed in both reaction time (RT) and error rate (ER) data, but contrary to expectations, we found no association between food RT priming effects and choice behaviour. All findings from confirmatory analyses regarding RT and ER priming effects, and the absence of the expected correlations between priming effects and impulsive food choices, were successfully replicated in the online cohort of participants. Overall, this study confirms the robustness of the APP as an indirect measure of food liking and raises questions about its applied value for research of eating behaviours.

    Loukia Tzavella, Leah Maizey, Andrew D. Lawrence, Christopher D. Chambers·2020·Psychonomic Bulletin & Review
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  • Moral anger as a dilemma? An investigation on how leader moral anger influences follower trust

    Leaders' expression of moral anger is considered important in curbing unethical behaviors and maintaining an ethical environment in organizations, but how it affects follower trust in leaders is unknown. The present research examines how leader anger expression in response to moral transgressions influences follower trust. I propose two paths through which leader moral anger affects follower trust: a character-based path whereby leader moral anger increases follower trust by elevating follower perceived leader integrity, and a relationship-based path whereby leader moral anger decreases follower trust by reducing follower perceived leader benevolence. I further propose that the balance of these mechanisms depends on follower moral orientation (i.e., justice orientation or care orientation). The results from two experimental studies did not provide support for the character-based path, but did provide tentative support for the relationship-based path between leader moral anger and follower affective trust. In addition, the results from the exploratory analyses indicated that leader moral anger had a negative direct effect on follower affective trust but not on follower overall trust. Theoretical and practical contributions are discussed and a revised model is proposed for the future research.

    Bo Shao·2019·The Leadership Quarterly
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  • Are single people a stigmatized ‘group’? Evidence from examinations of social identity, entitativity, and perceived responsibility

    Past research consistently suggests that singles are stigmatized, but do they constitute a stigmatized group? The current research provides deeper insight into the stigmatization of single people by understanding their ‘group-y’ nature, and how group identification and perception map onto discrimination and prejudice. Study 1 examined the extent to which singles identify as part of a group. Participants were assigned a novel minimal group identity and then completed measures of group identification for four group memberships (e.g., minimal group, relationship status, sexual orientation, nationality). As hypothesized, singles' identification with other singles was lower compared to their identification with other identities—as well as compared to partnered people's group identification. Contrary to our hypothesis, singles did not perceive less discrimination towards singles relative to other aspects of their identity. Study 2 examined the extent to which singles are perceived as a group and the extent to which their group-y-ness vs. perceived responsibility for their group membership explains the acceptability of prejudice towards them. Participants completed measures of entitativity and perceived responsibility for similar out-group identities as in Study 1 (e.g., single people vs. people in romantic relationships). As hypothesized, singles were rated lower in entitativity than people in romantic relationships and other groups. Prejudice towards singles was also more acceptable than prejudice towards national and sexual orientation groups. Accordingly, perceived responsibility was a stronger predictor of the acceptability of prejudice towards singles than their entitativity. We discuss the importance of group-based theoretical perspectives for understanding the current and future stigmatization and well-being of singles.

    Alexandra N. Fisher, John K. Sakaluk·2020·Journal of Experimental Social Psychology
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  • Voice Pitch – A Valid Indicator of One’s Unfaithfulness in Committed Relationships?

    When judging a male speakers’ likelihood to act sexually unfaithful in a committed relationship, listeners rely on the speakers’ voice pitch such that lower voice pitch is perceived as indicating being more unfaithful. In line with this finding, a recent study (Schild et al. Behavioral Ecology, 2020) provided first evidence that voice pitch might indeed be a valid cue to sexual infidelity in men. In this study, male speakers with lower voice pitch, as indicated by lower mean fundamental frequency (mean F0), were actually more likely to report having been sexually unfaithful in the past. Although these results fit the literature on vocal perceptions in contexts of sexual selection, the study was, as stated by the authors, underpowered. Further, the study solely focused on male speakers, which leaves it open whether these findings are also transferable to female speakers.

    Christoph Schild, Julia Stern, Lars Penke, Ingo Zettler·2021·Adaptive Human Behavior and Physiology
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