“…The Peckham and Amsel experiment has to be interpreted cautiously because of a number of methodological difficulties (discussed in detail by Staddon, 1970b, pp. 235-236) Although discussions of "inhibitory" effects of reinforcement on second-alley performance in the double runway have occasionally appeared in the frustrative-nonreward literature (e.g., Hamm, 1967;McHose, 1963;McHose and and Gavelek, 1969;Seward, Pereboom, Butler, and Jones, 1957), on the whole, frustrative-nonreward theory has taken the strong view that reinforcement omission has a facilitative effect, and has minimized or ignored the possibility that reinforcement may have an inhibitory function. Collateral evidence from several sources (e.g., Terrace, 1966) has given this position a wide credibility.…”