“…However, with more trials and performance reaching an asymptote, there was little difference in performance as a result of the training methods used (Berry, Prather, & Jones, 1971;Berry, Prather, & Bermudez, 1973;Prather & Berry, 1970). A comparison between the two instructional strategies showed that the trial-and-error method produced greater transfer than did the error-free method (Prather, 1969;Prather & Berry, 1970;Berry, Prather, & Jones, 1971;Prather, 1971). Using pursuit rotor tasks of varying degrees of difficulty, however, Macrae and Holding (1966b) demonstrated that trial-and-error practice led to more transfer to a simple task while guidance practice yielded better transfer to a complex task.…”