Perceptual Learning in Humans
نویسنده
چکیده
Chapter 2 reports two experiments that examine perceptual learning in humans. In Experiment 1, participants received intermixed exposure to two similar compounds (AX, BX, AX, BX ...) and blocked exposure to a second pair of similar compounds (CY, CY... DY, DY...). Aversions established to AX and CY generalized less to BX than to DY. This confirms that intermixed exposure results in greater perceptual learning in humans and establishes the sensitivity of the within-subjects procedure. In Experiment 2, one pair of compounds was presented in a forward order (i.e., AX->BX) whereas the second pair of compounds was presented in a backward order (i.e., DY->CY). Aversions established to AX and CY generalized less to BX than DY. These results indicate that inhibitory associations contribute to perceptual learning in humans and thereby establish a fundamental similarity between the mechanisms that underlie perceptual learning in humans and rats. 50 2.
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