Moderating Role of Agreeableness in the Curvilinear Relation between Age and Well-Being

The curvilinear relation between age and well-being moderated by agreeableness showed that the youngest and oldest age groups tended to show better well-being than the middle age groups (U-shaped relations) when agreeableness scores were high. However, both groups showed poorer well-being than middle-aged adults with lower agreeableness (Inverted-U relations).