Competing exploration and pre-adaptation in the course of light-contingent bar pressing over time.

Abstract
An attempt was made to provide evidence on the competition hypothesis of the course of light-contingent bar pressing (LCBP) over time. The hypothesis suggests that whether LCBP increases or decreases over time is a function of the extent extraneous stimuli provide competition with the light change for the animal''s exploration. In order to manipulate the competitiveness of extraneous stimuli, albino rats were given either 0, 1, 3, or 7 days of pre-adaptation to the apparatus which was either simple or complex in visual design. Light changes were either large or small. The results were consonant with the hypothesis.

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