Studies examining the possible joint effects of autonomous motivation and academic self-concept on academic achievement are scarce. In high school students, evidence was found for a mediating effect of autonomous motivation on the relation between academic self-concept and academic achievement [36]: students perceiving themselves as competent are assumed to be more autonomously motivated which in turn would lead to higher grades. It can be expected that this mediating effect consolidates in later years, during college or university but to our knowledge, this has not been studied so far. As intricate relationships may occur between academic self-concept and autonomous motivation, a person oriented research perspective can be valuable.