The planning activities in this research program included a review of the applied and theoretical literature in the field of learning, retention, and training, a selection of an appropriate taxonomy of tasks, a survey of Naval jobs to determine critical tasks from the standpoint of training, a series of technical meetings with consultants, and a conceptual design for a general purpose computer-based, experimental apparatus. Two experiments were designed and conducted in order to try out the newly developed set of research requirements and to provide a data base for subsequent investigations. These experiments dealt with training and transfer of procedural skills. At the end of the first experiment subjects were asked to suggest ways of improving the effectiveness of training. These suggestions were used to modify training for the second experimental group. On the basis of these experiments it was concluded: that trainee feedback can be of value in increasing training effectiveness, that "imagery" can play an important role in promoting procedural skills, and that training effectiveness can be achieved through the use of low-cost paper and pencil simulation of the operational task. (JY)