The Principles of Personality Trait Development and Their Relation to Psychopathology

This chapter reviews five empirically supported principles of personality development: cumulative continuity (i.e., increasing trait stability across development), maturity (i.e., persons grow more socially adapted across development), social investment (i.e., commitment to socially conventional roles promotes maturity), corresponsiveness (i.e., persons choose environments that support their personalities), and plasticity (i.e., personality change can occur throughout the life course). Evidence for each of these principles is reviewed. Finally, implications for psychopathology are drawn.