Personality and life satisfaction over 12 years: Contrasting mid- and late life.

Abstract. Both theoretical reasoning and empirical data suggest that personality and well-being have substantial interrelationships. However, more longitudinal evidence is required, and the relationship lacks research attention from a lifespan perspective. We examined the mid-term and long-term interrelations of Neuroticism and Extraversion with life satisfaction in two cohorts from middle and late adulthood, using data from the “Interdisciplinary Longitudinal Study of Adult Development (ILSE).” Multigroup, cross-lagged models reveal personality to be more predictive of life satisfaction than vice versa. Furthermore, an aging effect occurs regarding the relationships between life satisfaction and personality, with life satisfaction being predictive of personality only in the old cohort. Controlling for health weakens the interrelationship. Results add to the understanding of lifespan dynamics among personality and life satisfaction.