| Abstract: | Reports an error in "The role of reinforcement symmetry and stimulus modality in successive delayed matching to sample in the rat" by J. S. Cohen, M. Escott and P. Ricciardi (Canadian Journal of Psychology Revue Canadienne de Psychologie, 1984[Mar], Vol 38[1], 63-79). The last six words of the legend for Figure 1 should read "in the replication of Experiment 1." (The following abstract of the original article appeared in record 1985-05863-001.) 20 male Wister albino rats were trained and tested in asymmetrically and symmetrically reinforced successive delayed matching to sample (DMTS) tasks. The only difference between these discrimination problems was that correct omission of a leverpress to the test stimulus (S?), differing from the sample stimulus (S?), was reinforced in the symmetrically reinforced DMTS. Response biases during tests for retention of S? were reduced in the symmetrically reinforced DMTS. Greater losses in retention occurred to the visual than to the auditory S?. For the auditory S?, reduced response biases in the symmetrically reinforced DMTS led to reduced losses in S? retention scores over increased retention intervals. Methodological and theoretical implications are discussed in terms of the theory of signal detection. (French abstract) (28 ref). (PsycINFO Database Record (c) 2010 APA, all rights reserved) |
