Unification of theoretical models of academic self-concept/achievement relations: Reunification of east and west German school systems after the fall of the Berlin Wall

Longitudinal data (five waves) from large cohorts of 7th grade students in East Germany (n=2,119) and West Germany (n=1,928) were collected from the start of the reunification of the school systems following the fall of the Berlin Wall. Here we integrate the two major theoretical models of relations...