Second graders were administered a two-choice discrimination task in which irrelevant dimensions were correlated .50, .75, or 1.00 with the 100 percent rewarded cue. Results indicate that learning was most impeded in the .75 condition and was most efficient in the 1.00 condition. These results support the Hypothesis Testing Theory of…

This study examines the effects of initial response training and criterion training on the discrimination shift performance of preschool children; results are discussed in terms of differing theoretical orientation. After an initial task involving either criterion training or response training, 109 subjects were presented with either…

This study tested Levine's hypothesis testing model of discrimination learning with a procedure for determining which hypothesis is sampled without introducing blank trials. (DP)

According to Hypothesis (H) theory, learning should be very difficult when the number of Hs the subject samples from is very large and/or the correct H is not available. These assumptions were tested with third- and fourth-grade children. In general, results supported these assumptions. (Author/MP)