“…Blanchard and Honig (1976), Grant, Brewster, and Stierhoff (1983), Kamin (1969), Maki (1979), and Terry and Wagner (1975) have all reported that surprising events are better remembered than expected events, presumably reflecting more extensive processing. Moreover, numerous students of human cognition (e.g., Brown, 1958;Peterson & Peterson, 1959) have argued that one event will interfere with the processing of another to the degree that the former strains the (presumably) limited processing capacity of the organism. Integrating the notion that surprise enhances processing with the view that retention can be impaired by a nontarget event that overloads a limited processing capacity, Kremer (1979) and Wagner, Rudy, and Whitlow (1973) demonstrated that an unexpected, salient intervening nontarget US presentation interfered with manifest retention of a temporally proximal target CS-US pairing more than did an otherwise comparable expected intervening event.…”