“…Opfinger (1931) (Grossmann, 1973;Sigurdson 1981Sigurdson a, 1981bBitterman, 1988 (Grossmann, 1973, Sigurdson, 1981a, 1981bBitterman, 1988). Thus, phenomena such as resistance to extinction, the overlearning-extinction effect, successive negative incentive contrast, conditioned inhibition and within-compound associations were found to parallel the results in the vertebrate literature (Bitterman, 1988 (Greggers, 1989;Greggers and Menzel, 1993).…”