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Reaction times and error rates for “same”-“different” judgments of multidimensional stimull

1969; Springer Science+Business Media; Volume: 6; Issue: 3 Linguagem: Inglês

10.3758/bf03210087

1532-5962

Donald Bamber,

Neural and Behavioral Psychology Studies

Each S indicated whether two successively presented rows of letters were "same" or "different." Reaction times of the "different" response seemed to indicate that S examined the stimulus letters in a serial, self-terminating manner. However, the reaction times of the "same" response were not consistent with this model. Consequently, it was proposed that S employs simultaneously two distinct processes for comparing stimuli. One process would generate the "different" responses; the other process would generate the "same" responses. Most false "same" responses occurred when the two rows of letters differed minimally. Thus, the false "same" responses appear to result from a failure to detect the difference between the two stimuli. However, when S made a false "same" response, he was aware that he had done so. Therefore, it was suggested that only one of the two comparison processes failed to detect the stimulus difference.