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Waterman, Caroline K. – J Exp Soc Psychol, 1969
Based on the author's Ph. D. dissertation submitted to the Department of Psychology at the State University of New York at Buffalo.
Descriptors: Attitudes, Difficulty Level, Educational Psychology, Experiments
Peer reviewed Peer reviewed
Williams, Melanie L.; Willoughby, R. H. – Journal of Experimental Child Psychology, 1971
Descriptors: Age Differences, Difficulty Level, Grade 4, Grade 6