PsychArchives (ZPID Leibniz-Zentrum für Psychologische Information und Dokumentation)
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The effect of unethical leadership on employees’ unethical pro-organizational behaviour: A meta-analysis [Author Accepted Manuscript]
No full textBackground: This meta-analysis examines the relationship between unethical leadership and employees' engagement in unethical pro-organizational behaviours. When leaders lack moral integrity, it can undermine employees' ethical decision-making. By synthesizing evidence across studies, this research aims to clarify the scale and impact of this link, informing interventions to mitigate the harmful effects of unethical leadership on employee behaviour. Methods: A systematic literature search across five online databases identified 129 empirical studies published between 2014 and 2024. These studies investigated the relationship between unethical leadership and unethical pro-organizational behaviours, examining constructs such as exploitative leadership, authoritarian leadership, and abusive supervision. Only studies that were rated as having moderate or strong overall quality based on the QATQS risk of bias assessment were included. The meta-analysis employed a univariate random-effects model, with effect sizes calculated using Fisher's Z coefficient. Results: A total of 20 effect sizes from 12 studies were included, involving 6,892 participants across five countries, four from Asia (i.e., China, Vietnam, Saudi, and Iran) and the United States. The overall effect size was positively significant, indicating that unethical leadership moderately increases employees' unethical pro-organizational behaviours. The substantial heterogeneity suggests variability beyond chance. While the funnel plot and Egger's regression test indicate potential publication bias in the included studies, Duval and Tweedie's trim-and-fill method did not identify sufficient evidence of missing studies to warrant adjusting the effect size. Conclusion: Unethical leadership demonstrates a moderate positive effect on employees' engagement in unethical pro-organizational behaviours. Leaders' unethical conduct directly shapes this trend. However, potential mediating factors, such as a moral engagement, value-congruence, and moderating factors, such as organizational culture and ethical climate, may also influence these associations.reviewedacceptedVersio
Pretested Questionnaire Items - DigiMed1-Study
No full textThis document provides an overview of the questionnaire items that were pretested prior to the DigiMed1 study, the first empirical study conducted within the dissertation project on informed decision-making in medical contexts. The list includes all items that were initially developed or adapted for the DigiMed1 questionnaire and underwent pretesting to evaluate wording, comprehensibility, and suitability for the study population. The overview thus documents the basis of the final DigiMed1 questionnaire and allows for transparent reporting of the item development process.unknownunknow
Data for “Knowing what I don’t know” - Belief in conspiracy theories relates to lower metacognitive sensitivity: A Signal Detection Theoretic Approach
No full textBeliefs in conspiracy theories are seemingly hard to dispute through facts. Researchers have partly attributed this resistance to certain information processing styles that are associated with conspiracy beliefs. Previous research therein has extensively examined the role of object-level information processing, for instance, intuitive (vs. analytic) thinking and cognitive reflection. However, research has so far has not considered that conspiracy beliefs might also be related to different ways of metacognitive information processing. In two studies, one sample from Germany, one quota-based sample from the US (total N = 1,231), we show that a generic belief in conspiracy theories as well as the belief in specific conspiracy theories such as those surrounding vaccinations and QAnon (but less so conspiracy mentality) is related to lower metacognitive sensitivity – i.e., a lower ability to accurately evaluate one’s knowledge. Results hold when controlling for object-level knowledge, cognitive reflection, and intuitive thinking.unknow
Analyses Scripts, Output Files and Codebook of the Study "Once a Procrastinator, Always a Procrastinator? Examining Stability and Change as well as Long-Term Correlates of Procrastination During Young Adulthood"
No full textThe Mplus analysis scripts, de-identified output files, and accompanying codebook necessary to reproduce the results are provided for the analyses of the preconditions, as well as for tests of RQ1, RQ2, RQ3, and RQ4.unknownunknow
Screening Data from the Manuscript "Environmental Risk Factors for Developing Adolescent Anxiety and Depression: A Systematic Review"
No full textA data repository created as part of pre-print archival of the data collected during screening PRISMA review procedures.peerReviewe
Supplementary materials to "Calibrating items with time use diaries: A refined method" [Code]
No full textSupplementary materials [Code]. The related article is Scappini, E. (2025). Calibrating items with time use diaries: A refined method. Methodology, 21(3). https://doi.org/10.5964/meth.13215Input file for CaSty.2.0.exe program, corresponding output with the figures obtained from TUS 2008 data.unknownunknow
Study Protocol: Theoretical Perspective of Future Orientation
No full textThis scoping review aims to explore and synthesize the existing literature on what theoretical perspectives can be used in research on the future orientation of adolescents. In addition, the purpose of this scoping review is also to find out how the perspective of the theory is used in the domain of education, health and developmental identity. This review will map the knowledge landscape on this subject and identify gaps for future research.unknownothe
Supplementary materials to “Mixture multigroup Bayesian SEM with approximate measurement invariance for comparing structural relations across many groups” [Other]
No full textSupplementary materials [Other]. The related article is Zhao, H., Vermunt, J. K., & De Roover, K. (2025). Mixture multigroup Bayesian SEM with approximate measurement invariance for comparing structural relations across many groups. Methodology, 21(4). https://doi.org/10.5964/meth.16411Supplementary materials with ANOVA, bias, and ARI tables; boxplots for ARI and ME, and empirical application of MixMG-BSEM.unknownunknow
Coding Schemes for the Stage 2 Registered Report: Restriction of researcher degrees of freedom through the Psychological Research Preregistration-Quantitative (PRP-QUANT) Template
No full textCoding Schemes for the Stage 2 Registered Report: Restriction of researcher degrees of freedom through the Psychological Research Preregistration-Quantitative (PRP-QUANT) Templateunknownunknow
Stage 2 Registered Report: Restriction of researcher degrees of freedom through the Psychological Research Preregistration-Quantitative (PRP-QUANT) Template
No full textPreregistration can help to restrict researcher degrees of freedom and thereby ensure the integrity of research findings. However, its ability to restrict such flexibility depends on whether researchers specify their study plan in sufficient detail and adhere to this plan. Previous research indicates higher restrictiveness when preregistrations are based on structured versus unstructured template formats, although there is room for further improvement. This study built on these findings and investigated the restrictiveness of preregistrations based on the PRP-QUANT Template, an extensive template that aids the preregistration of quantitative studies in psychology. Preregistrations were sampled from PsychArchives and coded for their level of restrictiveness using the coding scheme of Bakker et al. (2020) and Heirene et al. (2024). We predicted that preregistrations based on the PRP-QUANT Template (N = 103) are more restrictive than preregistrations based on the OSF Preregistration Template (N = 52, Bakker et al., 2020, hypothesis 1). We also inspected whether peer review can contribute further to restricting flexibility and predicted higher restrictiveness for peer-reviewed (n = 29) than non-peer-reviewed preregistrations (n = 74, hypothesis 2), using nested Wilcoxon-Mann-Whitney tests. Additionally, we examined adherence to the preregistered plans in the associated publications (N = 19). In line with hypothesis 1, PRP-QUANT preregistrations had significantly higher restrictiveness scores than OSF Preregistrations. Moreover, consistent with hypothesis 2, peer-reviewed preregistrations had significantly higher restrictiveness than non-peer-reviewed ones. 73.68% of the associated articles included undeclared deviations. We discuss the implications of our findings for the PRP-QUANT Template and structured templates in general.notReviewedothe