In a serial recall task, the "Hebb repetition effect" occurs when recall performance improves for a sequence repeated throughout the experimental session. This phenomenon has been replicated many times. Nevertheless, such cumulative learning seldom leads to perfect recall of the whole sequence, and errors persist. Here the authors report…

Studied the performance of the U.S. Navy trainees on three computer-based lessons under programed control in order to determine whether variations in the sequence of instructional presentation improved learning. Sixteen references are cited. (FM)