Generalization: I. Generalization gradients from single and multiple stimulus points. II. Generalization of inhibition.

Publisher Website
Google Scholar
Abstract
35 pigeons were trained to peck at a monochromatic stimulus of 550 mμ. Ss were then assigned to a group and extinguished to one of the following stimuli: 550, 540, 530, 520, 510, and 490 mμ. on each of 2 successive days. Gradients of generalization (single stimulus) from the mean total number of responses during extinction, were contrasted with a comparable gradient from Guttman and Kalish (1956) in which Ss sampled over the entire range of stimuli (multiple stimulus). The gradients showed marked differences which were discussed. Postextinction gradients were obtained for the 2nd part of the study by permitting Ss to sample over the range of stimuli from 510 to 550 in 10-mμ. steps (including 490 mμ). The obtained gradients were compared with gradients generated from a "mirror-image" hypothesis of generalized inhibition. Certain marked discrepancies were observed between the predicted and obtained gradients which were supported by other studies of generalization inhibition. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

This publication has 0 references indexed in Scilit: