Abstract
Summary Two experiments were performed to examine whether the initial level of difficulty of three types of concepts (conjunctives, joint-denials, and biconditionals) is a product of naive Ss' biases for familiar conjunctive concepts. With male and female undergraduates as Ss (N = 56 for the first experiment and N = 35 for the second), in both experiments initial training on conjunctive concepts transferred negatively to the two other types of concepts. The transfer effects of joint-denial and biconditional concepts, however, varied as a function of the amount of training the Ss received. The results suggest that Ss' pre-experimental sets may exert a direct effect on the initial difficulty of a given type of concept.
Published Version
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