Competence, contingency, and the development of perceived control.
D000124:Achievement; D000293:Adolescent; D000328:Adult; D002648:Child; D002657:Child Development; D002675:Child, Preschool; D003071:Cognition; D006380:Helplessness, Learned / Q000523:psychology; D006803:Human Development; D006801:Humans; D007223:Infant; D007389:Internal-External Control; D008875:Middle Aged; D011581:Psychological Tests; D012649:Self Concept