Effects of group and individual contingencies on academic performance and social relations of special needs students.
D000124:Achievement; D002648:Child; D006233:Persons with Disabilities / Q000523:psychology; D004519:Education, Special; D005260:Female; D006801:Humans; D007859:Learning Disabilities / Q000523:psychology; D008297:Male; D010379:Peer Group; D012917:Social Adjustment