Use of a predictor display has been shown to virtually transform the difficulty of a variety of complex, manual control pursuit tracking tasks to the level of those having relatively simple control requirements. With 15-minutes practice, naive operators are able to perform some complex tasks with a predictor display at accuracy levels previously achievable only after extensive training without a predictor display. The purpose of the present program is to explore adaptive use of a predictor display to promote rapid and accurate learning on conventional tracking tasks. (NTIS)