Finds support for the hypothesis that individuals who prefer a visualization strategy will obtain higher scores on the "Mental Rotation Test" than individuals who prefer an orientation strategy. (RL)

Children in the response-cost condition required more trials to reach a performance criterion and exhibited longer response times than children receiving reinforcement only. Response cost appeared to produce a negative effect that interfered with problem solving ability. (Author/RL)

Finds significant differences for males and females on the "Mental Rotation Test" within and across trials, but does not show a differential response to training and practice by females, as was hypothesized. (RL)

Preschoolers' responses to Piagetian moral judgment stories indicate that they respond differentially to good and bad intent (punishing the bad intentions but not responding to good or neutral intentions), but that only older children respond reliably and differentially to consequences. (RL)

Finds that extraverted children did better than introverted children on both a nonverbal coding task and simple and complex verbal fluency tasks. Notes that anxiety influenced girls' performances on the more complex verbal fluency task, but did not alter boys' performances. Compares these findings to those of similar studies of adults. (RL)