Findings showed an interaction between mands (instructional directions) and response type. Only when a mand was given during performance of the sorting task did the frequency of SIB increase. The contingent application of verbal praise had a minor, though systematic, effect in reducing the frequency of SIB. (PHR)

Five experiments were conducted to determine whether properties inherent in some training procedures may subtly influence the adaptability of skilled performance of complex tasks. The first two experiments assessed the insensitivity of low-rate performances. Examined in the third experiment was the issue of whether instructions that focus…