Determinants of value transfer and contrast in simultaneous discriminations by pigeons |
| |
| Authors: | Tricia S Clement Thomas R Zentall |
| |
| Institution: | 1. Department of Psychology, University of Kentucky, 40506, Lexington, KY
|
| |
| Abstract: | In a simultaneous discrimination involving a positive (S+) and a negative (S−) stimulus, positive value appears to transfer from the S+ to the S−. However, negative value does not appear to transfer from the S− to the S+. Instead, when sufficient experience with the contingencies associated with responding to the S− is provided, it appears that the presence of the S− enhances the value of the S+ (i.e., a contrast effect is found). The purpose of the present experiments was to further examine the influence of the S+ on the S− in a simultaneous discrimination (between subjects in Experiment 1 and within subjects in Experiment 2). In both experiments, we found that under typical training conditions, given little direct experience with the value of the S−, value transfers from the S+ to the S−. If sufficient experience with the value of the S− is provided, however, contrast between the S+ and the S− can be demonstrated. Thus, in a simultaneous discrimination, value transfer from the S+ to the S− depends on the animal’s having responded relatively little to the S−. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
