IT IS RECOMMENDED THAT THOSE WHO HAVE THE RESPONSIBILITY FOR DEVISING TRAINING PROGRAMS IN INDUSTRY BE AWARE OF THE PROCESS OF EXPERIMENTAL PSYCHOLOGY AND SUBMIT NEW SKILLS TO FUNDAMENTAL ANALYSIS RATHER THAN IMITATE TECHNIQUES THAT HAVE WORKED IN OTHER SKILLS. THERE IS A LACK OF A SUFFICIENTLY WELL-TESTED SYSTEM OF PRINCIPLES OF TRAINING AND OF A SCIENTIFICALLY VALIDATED SYSTEM OF TRAINING TRAINERS. THE AVAILABLE RESEARCH EVIDENCE BEARING ON THE PROBLEM INCLUDES THE CATEGORIES OF--(1) FEEDBACK TO THE LEARNER, (2) METHODS OF PHYSICAL, VISUAL, AND VERBAL GUIDANCE TO LIMIT LEARNING OF ERRORS, (3) THE KINDS OF VISUAL CHANGE OR ADDITION AVAILABLE TO THE TRAINER, (4) WEIGHTING AND INTERPLAY OF VERBAL AND MOTOR ACTIVITIES IN LEARNING, (5) EFFECT OF SUCH CONDITIONS AS SPEED AND ACCURACY, MASSING AND SPACING, ON THE LEARNING PROGRESSION, (6) TRANSFER OF TRAINING AND EFFECTIVE SIMILARITY BETWEEN TASKS, AND (7) PROGRAMED LEARNING AND TEACHING MACHINES. (A BIBLIOGRAPHY IS INCLUDED.) THIS DOCUMENT IS AVAILABLE, FOR 17S. 6D., FROM PERGAMON PRESS, LTD., HEADINGTON HILL HALL, OXFORD. (RT)