“…Studies of transfer of predifferentiation training (e.g., Goss & Greenfeld, 1958) have frequently indicated that learning verbal labels to stimuli facilitates performance in some subsequent task when that task requires making new differential responses to the same stimuli. In contrast, experiments which have employed more direct tests of improvement in recognition or discrimination following practice in labeling have generally yielded negative results (Arnoult, 1953;Campbell & Freeman, 1955;Ellis, Bessemer, Devine, & Trafton, 1962;Robinson, 1955), in that no facilitation in these tasks has occurred as a result of distinctiveness labeling practice per se.…”