Research Feed

Researchers in China gave 1,052 adults two personality questionnaires: the Big Five Inventory-2 and a newer scale based on the I Ching, the Quantum-8-Personality Scale. They found modest links between the two. The Q8P trait "Contradiction" (indecisiveness, inner conflict) tracked with Big Five neuroticism, Q8P extraversion tracked with Big Five extraversion, and Q8P "Yanggang" (persistence, responsibility) tracked with conscientiousness. The new scale's structure failed to hold up in testing, so the authors call the results exploratory.

In a survey of 256 Turkish employees, mostly in private-sector manufacturing, extraversion, agreeableness, and neuroticism predicted how easily people "catch" others' emotions, both positive and negative. The Dark Triad traits (narcissism, Machiavellianism, psychopathy) did not. Openness and conscientiousness also didn't predict it. Employees who readily caught positive emotions reported better job performance, while catching negative emotions was unrelated to performance. Conscientiousness was the strongest predictor of performance itself.

This study followed 80 Polish female education students (68 remained) across four years of a teacher program that included training in psychological strengths like hope and resilience. Students' friendly feelings about time rose overall, while hostile feelings stayed about the same. Higher openness, extraversion, and agreeableness went with friendlier time attitudes, and higher neuroticism and conscientiousness went with more hostile ones. Students who scored high on directiveness (a tendency to control others) showed bigger drops in both friendly and hostile attitudes.

This systematic review of 16 studies (2020–2025) examines how the Big Five traits relate to online shopping and related digital behavior. Conscientiousness protects against impulsive and compulsive buying, while neuroticism is the strongest driver of both, including panic buying. Extraversion shows the broadest influence, notably on sharing information on social media. Openness encourages exploratory behavior, such as using online reviews. Agreeableness is the most context-dependent trait. Findings vary across cultures, and impulsive buying dominates the research.

This small survey of 102 college students found that curiosity, meaning the drive to seek out and become absorbed in new experiences, was linked to three Big Five traits. Students higher in openness, extraversion, and conscientiousness reported more curiosity. Agreeableness and neuroticism showed no significant relationship with it. The authors tie curiosity to traits involving engaging with the world, goal-directed effort, and openness to new ideas.

This study of 400 Pakistani adolescents (ages 13 to 16) found that authoritative parenting, meaning warm but firm and consistent, was linked to higher emotional intelligence, both directly and through personality. Teens who described their parents this way scored higher in agreeableness, extraversion, conscientiousness, and openness, and lower in neuroticism. Each of these traits in turn predicted emotional intelligence. Agreeableness was the strongest pathway and conscientiousness the weakest.

Which childhood behaviors reflect the genes tied to adult personality, before adult personality even fully forms? Using polygenic scores in over 5,500 children tracked from ages 9–13, this study found genetic propensity to neuroticism was the strongest and broadest signal (showing up as anxiety, depressed mood, sleep problems, more screen time, and even lower parental education and more family conflict). Genetic openness linked to better verbal reasoning and daydreaming (and interestingly, to later self-identifying as gay or bisexual). Genetic conscientiousness predicted being organized and persistent, agreeableness predicted fewer aggressive or rule-breaking behaviors, and extraversion predicted sociability and lower shyness. Notably, some links (like prosocial behavior and sensation-seeking) only emerged at the older age band, suggesting certain genetic "personality signatures" don't show up behaviorally until a bit later in development, indicating that the traits are latent in the genome well before they're visible in behavior.

This Newsweek piece reports on the large-scale genomic personality study (46 cohorts, over 1,200 gene variants), highlighting that genetic variants linked to neuroticism predicted more time spent in the hospital. Experts note this reflects association, not causation: possible explanations include neuroticism's link to more complex health presentations, difficulty coping with diagnoses, and less adaptive behaviors like smoking. The article also covers other trait-outcome links: conscientiousness with daytime activity, openness/extraversion with night-owl tendencies, and openness with moving to cosmopolitan areas (suggesting personality and environment reinforce each other). It emphasizes no single "personality gene" exists (effects come from many small variants combined) and that environment still plays a major role alongside genetics.

In an online survey of 15,120 adults in Canada, the USA, and Japan, researchers examined whether personality relates to how many biological children people have. More extraverted and more agreeable people reported more children, while more neurotic people reported fewer. Openness and conscientiousness showed no clear link. Being married, female, older, and heterosexual also went with having more children, and Americans and Canadians reported more than Japanese participants. The personality-children connection varied by country, suggesting culture shapes these patterns, though the personality effects were small and based on a brief self-report questionnaire.

This Nature news piece reports on the largest genetic study of personality to date, which scanned over one million people and identified roughly 1,200 genetic variants linked to the Big Five traits: more than 800 newly discovered. According to the article, neuroticism-linked variants jumped from 224 to 706 known hits, and conscientiousness went from just 3 to 131. Each variant's individual effect is tiny (the study's own example: the difference between the 50th and 50.35th percentile), but researchers say they collectively explain 5–16% of trait variation. The piece reports that using these genetic links, the study's authors connected traits to real outcomes: conscientiousness tracked with more daytime activity, lower smoking rates, and lower BMI; openness linked to night-owl tendencies and a taste for acquired flavors like coffee and pickles; extraversion correlated with COVID-19 infection risk. The article notes the genetic signal reportedly held up even after accounting for family environment and assortative mating, suggesting that these links aren't just proxies for upbringing or who marries whom.

Do people become more alike, or more different, as they age? A meta-analysis of 362 longitudinal studies (nearly 400,000 people) says: mostly neither. The spread of individual differences in the Big Five stays remarkably stable across the entire lifespan. Two exceptions stood out: neuroticism became more variable in late childhood and early adolescence (ages 5–14), likely reflecting kids diverging in how they handle school transitions and puberty, while extraversion became slightly less variable in middle and older adulthood, perhaps as social roles nudge people toward similar levels of assertiveness. Both effects were small. The takeaway: personality traits keep their predictive power for life outcomes at every age, since that power depends on people actually differing from each other.

This study combined results from 203 previous studies (nearly 4,800 correlations) to see how specific, narrow personality traits, not just the broad "Big Five," predict two things: whether someone becomes seen as a leader (emergence) and whether they're actually good at leading (effectiveness). The researchers found that these two outcomes are often driven by different traits. For example, assertiveness (a piece of extraversion) explains most of why extraverts tend to become leaders in the first place, even though extraversion overall isn't a strong predictor of whether they lead well once in charge. Similarly, being hardworking, organized, and self-disciplined (all part of conscientiousness) predicted job performance as a leader, while other conscientiousness-related traits, like rule-following, did not. The study also found that what makes a good leader depends on context: optimism mattered more for top executives, while being highly organized mattered more for student leaders than for people already working in organizations. Combining these narrow traits into custom-weighted scores predicted leadership success much better than using the broad Big Five traits alone, suggesting that companies could build better, more targeted assessments for hiring and promoting leaders.

PDF please repeat for this article Among 647 Chinese university students, neuroticism was the strongest predictor of nightmares, bad dreams, and nightmare distress, while extraversion showed a modest protective effect against milder, non-waking bad dreams. But the study went further, grouping students into three personality "types" based on Big Five patterns: overcontrolled (high neuroticism, low everything else), undercontrolled (impulsive, low agreeableness/conscientiousness), and resilient (emotionally stable, high conscientiousness). Both overcontrolled and undercontrolled types reported more frequent and distressing nightmares than resilient types, but for different reasons: one group seemed to internalize distress, the other struggled with impulse control. Distress was worst when overcontrolled individuals faced real-life stress and relied on avoidance coping, suggesting nightmare vulnerability isn't just about traits in isolation, but how personality, stress, and coping style combine.

Can resting brain activity predict your personality? Researchers recorded 5 minutes of resting-state EEG from 115 Chinese university students and tried to predict Big Five scores from patterns of brain connectivity. The results were modest: conscientiousness showed the strongest link, tied to alpha-band connectivity (r = .30); extraversion linked to beta-band connectivity (r = .25); and neuroticism linked to theta-band phase synchronization (r = .25) — the only one that survived strict statistical correction. Agreeableness showed no detectable brain signature at all. The authors are notably cautious themselves, framing these as small, exploratory effects that need replication in bigger samples before drawing any real conclusions, a reminder that even genuine trait-related brain differences tend to be faint and hard to pin down with current methods.

Want to stay active in later life? Personality may matter more than we think. This rapid review of 19 studies on adults 40+ found extraversion consistently linked to higher physical activity across the board, while neuroticism showed the opposite pattern, especially from midlife onward. Conscientiousness's link to activity actually got stronger with age (perhaps as sustained self-discipline pays off over time) while openness mattered mainly during life transitions (like retirement) rather than as a steady predictor. Agreeableness showed no clear pattern either way. The review also found almost no interventions tailored to personality, but the two that existed were telling: a digital self-control program worked best for highly conscientious people, while an exergaming program was more motivating for less extraverted participants — suggesting future activity programs might do better by matching the approach to the person rather than using one-size-fits-all.

This large-scale genomic study meta-analyzed data from over 611,000 to 1.14 million people across 46 cohorts to identify DNA variants associated with the Big Five personality traits. The researchers found 1,260 significant genetic variants (824 new), with common variants explaining a modest 5–9% of trait variance (far less than the 40–60% suggested by twin studies, indicating environment plays a major role. Genetic effects were remarkably consistent across countries, ages, and reporting methods (self vs. other-report), and largely unconfounded by family environment or assortative mating) unlike traits such as educational attainment. Polygenic scores and Mendelian randomization analyses linked personality genetics to psychiatric disorders, health behaviors, career outcomes, and even research participation, with some evidence for causal effects (e.g., conscientiousness lowering BMI, extraversion raising COVID infection risk).

Across two studies (cross-sectional and 4-wave longitudinal), "healthy personality"—higher extraversion, agreeableness, conscientiousness, openness, plus lower neuroticism—consistently predicted higher well-being (mental health, life satisfaction, worthwhileness), driven mainly by overall trait elevation rather than resemblance to a specific personality "profile." Healthy personality did predict higher levels, but not stability or change, in well-being or psychological richness (novelty, challenge, perspective shifts) over time.

Using confirmatory factor analysis on 408 Chinese private university students in Chengdu, this study validated the five-factor structure of Openness, Conscientiousness, Extraversion, Agreeableness, and Neuroticism, with acceptable-to-excellent model fit across all dimensions. The study confirms the Big Five's structural validity in this population, supporting institutional recommendations like personality development courses and data-driven student profiling systems to guide holistic growth.

Researchers compared laypeople's beliefs about personality stability to actual data. Study 1 surveyed 887 US adults; Study 2 analyzed 166,971 people across 8 longitudinal datasets tracking Big Five traits from ages 15-90. People believe personality barely changes, but empirically, neuroticism dropped 0.40 SD and extraversion 0.78 SD over the lifespan. Changes as large as those seen in income or health. Conscientiousness alone shifted a cumulative 1.91 SD across adulthood, comparable to major life-outcome variables.

In a 16-year study of 1,110 Mexican-origin adults, job loss disrupted normal personality maturation: conscientiousness and agreeableness declined, and neuroticism's typical age-related decline stalled. Openness dropped both before and after job loss. Rank-order stability was unaffected, but personality profile stability weakened. A partner's job loss also mattered (especially a husband's), which triggered lasting declines in the spouse's agreeableness, conscientiousness, and openness, though conscientiousness sometimes rose compensatorily.