The time constraints facing most Navy instructors often preclude their providing feedback concerning poor performance of trainees in various military training programs that takes into account such psychological considerations as contiguity, repetition, reinforcement, or consideration of a learner's internal conditions of learning. The Instructor's Diagnostic Aid for Feedback in Training (IDAFT) has been proposed as one possible solution to this problem. Major steps in the IDAFT process include introduction to the program, performance measurement (either objective or subjective), error analysis, determination of major sources and types of error, identification of categories of training deficiency, determination of causes of error and events of instruction that were not properly addressed, development of a general feedback prescription from IDAFT, modification of the general prescription for specific application, and presentation of the feedback prescription to the training team. The model has been field tested with actual team instructors involved in antisubmarine warfare training teams. This trial has shown that it takes an instructor who is familiar with the system from three to five minutes to work through an IDAFT prescription. Plans are being formulated to assess the effectiveness of the IDAFT system and to determine whether it is the best method for providing feedback aids in naval team-training situations. (MN)