“…Since the nonassociative hypotheses all rely on the effects of experience with an aversive stimulus (like shock), they encounter serious difficulty in explaining Kamin effects in situations in which no such stimulus is present (e.g., appetitive learning situations). Although the Kamin effect has been demonstrated in a simple, nondifferential appetitive learning situation (Seybert et al, 1979), examination of retention in an appetitive discrimination paradigm might also prove very helpful in this regard. However, the results of the two studies that have examined retention of an appetitive discrimi-nation (Jaffard, Destrade, Soumireu-Mourat, & Cardo, 1974;Tribhowan, Rucker,& McDiarmid, 1971) are inconclusive because they used food-deprivation procedures.…”