Research Feed

This observational study of nearly 10,000 shoppers in 2020 highlights how demographics and mandates shaped mask-wearing behavior in the United States. Before mandates, voluntary compliance was low at 41%, with significant disparities based on identity and geography: females were 1.5 times more li...

Herd immunity occurs when a sufficient portion of a population becomes immune to an infectious disease (either through vaccination or previous infection) making its spread unlikely. This collective protection effectively shields those who are not immune, such as individuals with compromised immun...

This massive study of 144,496 sessions reveals a significant validity crisis in psychological measurement. While 88% of scales show high internal consistency, only 4% pass rigorous structural validity tests. The researchers identify 'v-hacking' (selectively reporting favorable metrics) as a wides...

This meta-analysis establishes a theoretical framework linking personality traits to prosocial behavior through situational affordances. By analyzing 770 studies involving economic games like the Prisoner’s Dilemma and Dictator Game, the researchers identified four key situational factors (exploi...

This study analyzed vaccine hesitancy in Israel, revealing that personal proximity to the virus was the strongest driver of acceptance. Healthcare workers on the front lines and high-risk individuals were much more likely to support inoculation. On the other hand, parents and medical staff who di...

This study validates the IPIP-NEO-120 as a structurally robust tool for assessing the Big Five personality traits. Analyzing a massive sample of over 320,000 individuals, researchers used Structural Equation Modeling (SEM) to confirm that the 30 facets fit well into their five broad domains. Whil...

The LOOPR Project confirms the high reliability of personality research, successfully replicating 87% of known trait-outcome associations. While findings generally hold, replication effect sizes were typically 77% as strong as original reports, suggesting previous overestimations. These results v...

This meta-analysis of 90,000 participants identifies Neuroticism, Extraversion, Openness, and Conscientiousness as key predictors of verbal fluency. These traits consistently correlate with word retrieval across all age groups, independent of education. Notably, the protective effects of these pe...

Research identifies that the clinical impact of nightmares is driven not only by how often they occur but by the dreamer's underlying emotional framework. While nightmare frequency is a baseline factor, Neuroticism (or heightened emotional reactivity) is a significant contributor to the distress ...

The evolution of performance management (PM) has shifted from a focus on rating accuracy to a focus on driving actual results. While early strategies emphasized cognitive processes to ensure 'true' performance ratings, traditional structured systems—incorporating cascading goals and competency mo...

This chapter offers a comprehensive introduction to the theoretical frameworks and empirical evidence linking personality to parenting. It begins by establishing the core concepts within personality psychology and parenting research, then transitions into a detailed review of how specific traits ...

This meta-analysis of 33,033 individuals challenges the assumption that self-reports are inherently skewed by self-enhancement. Results show that self-ratings align closely with those of well-acquainted informants (average δ=−.038), suggesting people generally view themselves realistically. Discr...

This study utilizes massive data sets of over 1.5 million participants to address the long-standing debate over whether humans can be categorized into distinct 'personality types.' While the Five Factor Model is the standard for describing individual traits, previous attempts to find consistent t...

Research involving over 44,000 participants confirms that personality traits are reliably communicated through musical preferences, extending beyond simple self-reports to behavioral actions. Both reactions to unfamiliar music and 'Likes' for specific artists on social media successfully predicte...

This large-scale longitudinal study involving over 22,000 adults demonstrates a powerful, bidirectional relationship between personality and sleep quality. Lower Neuroticism and higher Extraversion were the strongest predictors of better sleep, often outweighing demographic factors. Conversely, l...

This handbook explores the multidimensional science of Subjective Well-Being (SWB), which encompasses positive emotions, life satisfaction, and optimism. By synthesizing philosophical history with empirical research, the text examines how biological, cultural, and policy-driven factors influence ...

This research emphasizes that family ties (specifically marital, intergenerational, and sibling relationships) serve as primary pillars of psychological well-being throughout adulthood. The study highlights that the quality of these connections often matters more than their mere existence, noting...

Research on 514 participants indicates that Openness to Experience and Agreeableness are the strongest predictors of a 'universal-diverse orientation,' or the appreciation of human commonalities and differences. While factors like low Neuroticism and high Conscientiousness also play roles, specif...

This handbook offers a comprehensive and practical guide to major personality assessment tools, combining theoretical foundations with real-world application. Covering widely used instruments, it details their development, administration, scoring, and interpretation, along with psychometric prope...