Research Feed

This study mapped the personality profiles of 263 occupations using data from over 88,000 individuals. It found that while broad Big Five traits vary across jobs, specific personality 'nuances' offer even deeper insights into occupational differences. Interestingly, high-performance roles tend to be more personality-homogeneous, suggesting these jobs are more selective. The research provides a comprehensive look at how our unique traits align with our professional paths.

This study investigated using AI chatbots and machine learning to infer Big Five personality traits from text-based interviews. Researchers found that while these machine-inferred scores were reliable and followed expected factor structures, they struggled with discriminant validity, meaning the scores for different traits often overlapped too much. Furthermore, while the AI could predict some outcomes and showed promise for general use, its ability to predict real-world criteria like GPA was relatively low. These findings suggest that while AI personality assessment is feasible, it currently functions best as a supplement to traditional self-reporting rather than a total replacement.

Using data from over 30,000 participants, this study links the Big Five personality traits to dietary habits, exercise, and obesity. Conscientiousness emerged as a key predictor of health, correlating with recommended food intake, higher physical activity, and lower obesity risk. Conversely, Neuroticism was associated with poor dietary choices and increased obesity. Interestingly, Openness and Extraversion showed mixed results, linking to both healthy and unhealthy eating habits. These findings suggest that while personality is stable, understanding these behavioral patterns can help tailor effective, individualized health interventions.

This five-decade longitudinal study reveals that vaccine resistance and hesitancy are rooted in deep-seated psychological histories rather than simple misunderstandings. Key predictors include adverse childhood experiences, long-standing mental health struggles, and specific personality traits like nonconformism, fatalism, and high negative emotionality. Furthermore, many resistant individuals faced cognitive challenges in processing complex health data. These findings suggest that vaccine attitudes are established well before adulthood, highlighting the need for early childhood education and tailored messaging that accounts for these lifelong cognitive and emotional frameworks.

This meta-analysis examined how Big Five personality traits relate to problematic cannabis use. Findings showed that higher neuroticism and openness, along with lower conscientiousness and agreeableness, were associated with greater risk of problematic use. Notably, openness distinguished cannabis problems from other addictions. Overall, results support the relevance of personality traits in understanding substance-related risks and suggest potential directions for targeted prevention and treatment strategies.

This review highlights a significant resurgence in personality psychology, organizing the field around four core responsibilities: defining the units of analysis, documenting development across the lifespan, explaining the psychological processes behind behavior, and providing a framework to understand individual motivations. Over the last 20 years, the field has evolved to bridge the gap between stable traits and dynamic patterns. By addressing these four agendas, the research provides a comprehensive meta-structure that explains not just what personality is, but how it functions and changes, setting the stage for future exploration into the complexities of human nature.

This research introduces a multimodel NLP framework designed to automate and enhance the psychological scale development process. By adapting the GPT-2 model, researchers generated a massive 'AI-based item pool' (AI-IP) of one million personality items, which were then filtered using a BERT model trained to predict item correlations based on text alone. This framework effectively narrows the pool to the most relevant items while using zero-shot models to ensure balanced content coverage. Testing revealed that these AI-assisted scales achieved reliability, validity, and fit equivalent to traditionally developed scales. Ultimately, this approach streamlines the creative process of item generation and increases the likelihood of creating a valid scale on the first attempt, significantly reducing the need for costly revalidation.

This massive study of over 350,000 people across six continents reveals that preferences for Western music follow universal patterns that transcend cultural boundaries. By analyzing both genre favorability and direct audio reactions, researchers identified five consistent latent factors of musical preference that remain stable across different countries. These preferences are closely linked to the Big Five personality traits regardless of location; for instance, Extraversion consistently predicts a liking for upbeat Contemporary styles, while Openness correlates with a preference for complex Sophisticated music. Because these correlations (along with those involving gender and ethnicity) are so invariant, the findings suggest a deep, universal connection between human psychology and musical taste.

This study introduces a method to extract personality traits directly from large-scale language models, mimicking traditional survey-based psycholexical research. By analyzing millions of words in natural settings, researchers recovered a correlational structure nearly identical to human ratings. While the model accurately captured the first three Big Five factors, Neuroticism and Openness proved more difficult to extract, offering a new, semantic perspective on the lexical hypothesis across thousands of terms and multiple languages.

This updated research, involving over 240,000 participants, refines our understanding of how personality matures. It confirms that 'rank-order stability' (how you compare to others your age) increases rapidly until age 25 before plateauing. While most traits show smaller changes than previously thought, Emotional Stability (lower Neuroticism) was found to increase significantly and consistently throughout life. This paints a hopeful picture of psychological growth and stabilizing maturity as we age.

This comprehensive meta-analysis of over 160,000 participants explores the deep connections between personality and intelligence. The findings identify Openness and Neuroticism as the strongest predictors of cognitive ability, with Openness specifically linked to 'crystallized' intelligence, or acquired knowledge. By looking at specific facets, the researchers found that intellectual engagement and unconventionality correlate positively with intelligence, while traits like sociability and orderliness actually show slight negative correlations.

This study of 9,667 UK adults identifies lower general intelligence and lower neuroticism as primary predictors of vaccine hesitancy. While lower intelligence consistently linked to various justifications for avoiding shots, lower neuroticism specifically predicted COVID-19 hesitancy. These findings suggest cognitive ability is a more uniform driver of skepticism than broad personality traits, providing vital insights for tailoring public health communications to different psychological and cognitive profiles.

Most research on how individual differences affect COVID-19 guideline adherence has been cross-sectional, capturing only a single point in time. This leaves a significant gap in understanding prospective associations; how specific personality traits or behaviors actually predict future actions. Specifically, we lack longitudinal data that can forecast mask-wearing habits, the onset of symptoms, or the likelihood of an individual seeking viral testing over time.

This global review reveals that pandemic control depends heavily on public and healthcare worker acceptance, which varies dramatically by region. High acceptance rates exceeding 90% were found in nations like Ecuador and Malaysia, while significant hesitancy appeared in Kuwait, Russia, and the United States. Furthermore, varied acceptance among healthcare workers highlights a critical challenge for global health. Addressing this widespread hesitancy is essential for building the trust necessary to achieve effective worldwide immunization.

History shows that pandemics are a recurring challenge, often driven by zoonotic pathogens that spill over from animals to humans through trade, hunting, and close contact. While modern medicine has advanced, ancient public health strategies like quarantine, isolation, and border control remain essential when pharmaceutical options are limited. Effectively managing future threats requires a multi-pronged approach: robust global surveillance of 'spillover' interfaces, rapid diagnostic technologies, and flexible vaccine platforms that can be deployed quickly to maintain societal stability.

This study suggests that individuals lower in agreeableness are more likely to resist or fail to comply with behavioral health mandates, such as those issued during public health crises. The findings indicate that tailoring health communication strategies to personality differences could improve compliance. More broadly, the results demonstrate the value of applying established psychological theories to understand and address behavior in real-world emergency contexts.

This large-scale analysis across 10 low- and middle-income countries (LMICs) found significantly higher vaccine acceptance (average 80.3%) compared to the United States (64.6%) and Russia (30.4%). The primary driver for acceptance in these regions is the desire for personal protection, while hesitancy is mostly rooted in concerns over potential side effects. Crucially, healthcare workers are identified as the most trusted voices for guidance. These findings suggest that prioritizing vaccine distribution to the Global South would be highly effective, provided that campaigns leverage trusted medical professionals to communicate safety and efficacy to convert this high willingness into actual uptake.

Research indicates that personality traits significantly influence health behaviors and risk perception during the COVID-19 pandemic. Conscientiousness and Agreeableness strongly correlate with adherence to public health guidelines and vaccine acceptance. Meanwhile, Extraversion affects social distancing compliance and the confidence to re-enter public spaces. Understanding these psychological drivers allows for more effective, tailored public health messaging that resonates with diverse individual profiles.