• Publications
  • Influence
Estimating the reproducibility of psychological science
TLDR
A large-scale assessment suggests that experimental reproducibility in psychology leaves a lot to be desired, and correlational tests suggest that replication success was better predicted by the strength of original evidence than by characteristics of the original and replication teams.
Why can't a man be more like a woman? Sex differences in Big Five personality traits across 55 cultures.
TLDR
Overall, higher levels of human development--including long and healthy life, equal access to knowledge and education, and economic wealth--were the main nation-level predictors of larger sex differences in personality.
Conspiracist ideation in Britain and Austria: evidence of a monological belief system and associations between individual psychological differences and real-world and fictitious conspiracy theories.
TLDR
Examination of correlations between conspiracist ideation and a range of individual psychological factors showed that belief in the entirely fictitious conspiracy theory was significantly associated with stronger belief in other real-world conspiracy theories, stronger paranormal beliefs, and lower crystallized intelligence.
The Attractive Female Body Weight and Female Body Dissatisfaction in 26 Countries Across 10 World Regions: Results of the International Body Project I
TLDR
Results indicated there were significant cross-regional differences in the ideal female figure and body dissatisfaction, but effect sizes were small across high-socioeconomic-status (SES) sites.
Universal sex differences in the desire for sexual variety: tests from 52 nations, 6 continents, and 13 islands.
TLDR
Findings from a cross-cultural survey of 16,288 people across 10 major world regions demonstrate that sex differences in the desire for sexual variety are culturally universal throughout these world regions.
Role of media reports in completed and prevented suicide: Werther v. Papageno effects.
TLDR
The impact of suicide reporting may not be restricted to harmful effects; rather, coverage of positive coping in adverse circumstances, as covered in media items about suicidal ideation, may have protective effects.
Patterns and Universals of Adult Romantic Attachment Across 62 Cultural Regions
As part of the International Sexuality Description Project, a total of 17,804 participants from 62 cultural regions completedthe RelationshipQuestionnaire(RQ), a self-reportmeasure of adult
One Century of Global IQ Gains
TLDR
Findings include that IQ gains vary according to domain, are stronger for adults than children, and have decreased in more recent decades, while factors associated with life history speed seem mainly responsible for the Flynn effect’s general trajectory.
Meta-analysis of associations between human brain volume and intelligence differences: How strong are they and what do they mean?
TLDR
It is shown that the strength of the positive association of brain volume and IQ has been overestimated in the literature, but remains robust even when accounting for different types of dissemination bias, although reported effects have been declining over time.
Lack of correlation between digit ratio (2D:4D) and Baron-Cohen's "Reading the Mind in the Eyes" test, empathy, systemising, and autism-spectrum quotients in a general population sample.
Abstract The second-to-fourth digit ratio (2D:4D) is sexually differentiated and is a likely biomarker for the organisational (permanent) effects of prenatal testosterone on the human brain. Recent
...
1
2
3
4
5
...