  Mentalistic accounts tend to assume, and sometimes even explicitly to embrace (see Fodor 1981), the hypothesis that the mind possesses at birth or innately a set of procedures or internally represented processing rules which are deployed when learning or acquiring new responses. Behaviorism, by contrast, is anti-nativist. Behaviorism, therefore, appeals to theorists who deny that there are innate rules by which organisms learn. To Skinner and Watson organisms learn without being innately or pre-experientially provided with implicit procedures by which to learn. Learning does not consist, at least initially, in rule-governed behavior. Learning is what organisms do in response to stimuli.  For a behaviorist an organism learns, as it were, from its successes and mistakes. “Rules,” says Skinner (1984a), “are derived from contingencies, which specify discriminative stimuli, responses, and consequences” (p. 583). (See also Dennett 1978).