Large GWAS identifies more than 1,200 variants linked to the Big Five personality traits and life outcomes

A genome-wide association study (GWAS) reported via ScienceDaily has identified more than 1,200 genetic variants associated with the Big Five personality traits — openness, conscientiousness, extraversion, agreeableness, and neuroticism. The study, which the press release credits to a large international team, also finds that many of the same variants are associated with health outcomes, longevity, career trajectories, income, and everyday behavioural habits.

The findings extend earlier work on the genetic architecture of personality, which had identified far fewer robustly associated loci. The authors highlight that the genetic signal overlaps substantially with traits traditionally considered environmental or biographical, consistent with the broad pleiotropy increasingly observed across polygenic trait studies.

Importantly, the researchers emphasise that environment continues to play a substantial role: the genetic variants identified collectively account for a minority of variance in personality, and non-genetic influences remain central. This is consistent with established models of gene–environment interplay in complex behavioural traits.

Full methodological details, the journal of publication, and the specific institutions involved are not available in the public lede from ScienceDaily. Readers should consult the primary publication for study design, population composition, and effect sizes before drawing further conclusions.