To estimate the relative effects of three types and three combinations of feedback on children's discrimination learning, a meta-analysis was performed on the findings of 89 studies. In general, reward compared to punishment or to reward plus punishment is the least efficient method of feedback for teaching children discrimination materials.…

Children with mental retardation are particularly prone to failure on relational tasks such as oddity and match-to-sample, suggesting a differential sensitivity to relational information. This paper reports on several studies in which characteristics of stimulus arrays were enhanced. Results demonstrated the theoretical and practical significance…