Personality constructs are defined as qualities / characteristics that remain “relatively stable over time.” Additionally, research has revealed that the tendencies characterizing a person’s psychology tends to form and become more stable in emerging adulthood, rather than prior. What causal mechanisms explain the formation of personality? How stable is personality in adulthood? Which theories provide reasonable explanations for this (psychoanalytic, humanistic, trait, social-cognitive, and behaviorist theories)? Note: focus on typical patterns that explain most people