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22. Effects of frequency of feedback on transfer in concept identification. Schroth ML. Am J Psychol; 1997; 110(1):71-9. PubMed ID: 9100341 [Abstract] [Full Text] [Related]
31. Bidimensional sorting in preschoolers with an instrumental learning task. Watson JS, Hayes LA, Vietze P. Child Dev; 1979 Dec; 50(4):1178-83. PubMed ID: 535435 [Abstract] [Full Text] [Related]
32. Discrimination learning in mentally retarded and nonretarded children as a function of the number of relevant dimensions. Ullman DG, Routh DK. Am J Ment Defic; 1971 Sep; 76(2):176-80. PubMed ID: 5147211 [No Abstract] [Full Text] [Related]