Personality and social attention: Trait-driven differences in neural engagement.

Personality significantly influences social behaviour and cognitive processes, yet its role in modulating neural mechanisms during social attention remains underexplored. This study examined the associations between Big Five personality traits and event-related potentials (ERPs) during a joint Flanker task simulating shared attention in a controlled environment. Conscientiousness was consistently associated with increased P3 amplitudes, particularly during inhibitory control tasks, while Neuroticism was related with variations in N2 amplitudes.

Social expectations as a possible mechanism for adult personality change: Limited empirical evidence for the social investment principle.

Objective: Personality traits change in both mean levels and variance across the life span but the mechanisms underlying these developmental trends remain unclear. Social Investment Principle (SIP) suggests that social expectations drive personality changes in adulthood. Accordingly, we tested whether differences between personality traits in social expectations for them can explain their different change trajectories in young adulthood.

Investigating general and specific psychopathology factors with nuance-level personality traits.

Mental health disorders share substantial variance, prompting researchers to develop structural models that can capture both generalised psychopathology risk and disorder/symptom-specific variation. This study investigated the associations of the general and specific psychopathology factors with multiple personality trait hierarchy levels: broad domains, their facets and nuances (N = 1839 Estonian adults). A bi-factor model with a general 'p' factor and specific factors for internalising problems, thought disorders and substance use best represented psychopathology structure.