Research Feed

This paper explores whether you can change an AI's "personality" by directly tweaking its internal math rather than just asking it nicely via prompts. Testing across 14 language models, the researchers found that injecting personality signals directly into the model's computations (targeting the ...

This CHI 2026 paper tests whether Big Five (OCEAN) traits can be embedded in AI coding agents. Researchers created three profiles (a no-personality Baseline, a Cautious Guardian (thorough, risk-focused), and a Decision Builder (confident, exploratory)) and had 14 developers use all three on refac...

This correlational study of 80 Filipino public school employees examined how Big Five traits relate to workplace relationship quality. Employees scored high on agreeableness, openness, conscientiousness, and extraversion, with moderate neuroticism. All four high-scoring traits positively and sign...

This 23-year longitudinal study of 306 Belgian participants found that low conscientiousness was the only Big Five trait serving as a necessary condition for problematic alcohol use across all developmental stages, from childhood through adulthood. High conscientiousness acted as a near-complete ...

This opinion piece argues that personality traits function as compressed social information, allowing humans to efficiently evaluate cooperative partners. The Big Five personality framework is reframed not merely as a psychometric taxonomy, but as a cognitive shortcut that condenses complex behav...

This meta-analysis of over 65,000 participants confirms that Big Five traits significantly shape our nocturnal experiences. Neuroticism is the primary predictor of nightmare frequency and emotional distress, while Openness correlates with high dream recall, vividness, and lucid dreaming. Extraver...

This study highlights that core personality traits are powerful predictors of baseline fitness and the specific exercise intensities individuals enjoy. Notably, participants scoring high in Neuroticism experienced the most significant stress-reduction benefits from aerobic training, suggesting a ...

This large-scale meta-analysis of over 150,000 participants explores how the Big Five traits influence dietary habits. Researchers found that lower Neuroticism and higher levels of Openness, Conscientiousness, Extraversion, and Agreeableness consistently predict a healthier diet. These traits aff...

This systematic review of 58,812 participants demonstrates that Big Five personality traits significantly influence sleep. High Neuroticism consistently correlates with poor sleep quality and disturbances, while Conscientiousness is a strong predictor of 'morningness' and better sleep hygiene. Th...

This meta-analysis of 148 studies confirms a consistent negative correlation (r = -0.238) between neuroticism and relationship quality. Interestingly, factors like race, sexual orientation, and the use of longitudinal versus cross-sectional data did not change this fundamental link. However, the ...

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...

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 ...

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, Neur...

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 li...

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 cannabi...

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 unde...

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...

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 musica...

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....