By taking determinants of both sides of the equation in Exercise 18. prove the identity given in Exercise 14. (Recall that the determinant of the matrix is ad ?bc.)

Identity achievement: Integration of various aspects of the self into a coherent whole that is stable over time and across events Highest percentage of youth in moratorium is highest between ages 17-19. People in identity-diffusion and moratorium statuses tend to move into identity-achievement status, however those in a foreclosed state Parenting ● Foreclosed identity adolescents tend to have authoritarian parenting ◦ ● Adolescent more likely to explore identity options if one parent encourages them Individual’s own behavior: ● Early use of drugs undermines adolescents’ abilities to develop healthy identities. Larger social and historical context ● E.g. impoverished conditions ● Historical and societal expectations Marcia Developed a method in whi