Examined preschoolers' strategic behavior on a task in which they must decide whether two arrays are the same. Results indicated that the course of strategy development is complex, there is much diversity within a child and among children in both strategy production and strategy utilization, and that children act in ways that are counter to…

Third-graders showing negligible mastery of multiplication combinations were randomly assigned to two groups which practiced different subsets of combinations. Retest results were inconsistent with Siegler's (1988) proposal that item-specific computational practice is necessary to change error patterns and promote mastery. Results suggested that…

For this study, computer technology was used to teach attentional skills to six young children. Prior reinforcement histories of individual stimuli were manipulated to examine whether they are the variable that controls the features of compound cues to which young children attend. (RWB)

In one experiment, subjects from third grade through college relied on memory retrieval rather than on counting to solve multiplication problems. An effect of confusing problems on error rates and reaction times indicated the activation of related information. In a second experiment, subjects demonstrated automaticity of fact retrieval on simple…