Health-related behaviour and personality trait development in adulthood

This investigation explored the contribution of a healthy lifestyle to personality trait stability and change during adulthood. A nationally representative sample of 11,133 Australian adults completed self-report measures of health-related behaviour and personality traits at baseline (2010) and again four years later (2014). Results showed that physical activity and alcohol intake, and to a lesser extent diet and cigarette smoking, were important for mean-level change and intra-individual stability of personality for all trait dimensions. Moreover, positive health behaviours were associated with less of a decrease in extraversion and more of an increase in openness, agreeableness and conscientiousness over four years.These findings suggest that healthy living might help to facilitate desirable personality trait stability and change during adulthood.