97 preschool children (4 to 6 years old) were assigned three tasks, easy, moderate, and difficult. The group's concentration on the moderate task and the subsequent choices of task were compared with those in the groups given the easy and difficult tasks. Analysis showed that (1) on the moderate task the group's concentration was high as well as on the easy task. (2) The moderate-task group's subsequent choices of task were different from those given the easy and the difficult tasks. They were not inclined toward the easier or the same and more difficult tasks.
