Some effects of a discrete trial procedure on differentiation learning by Japanese monkeys
- 19 Downloads
Employing newly developed equipment, which permitted presentation of discriminative stimuli and the response manipulandum separately, the present study reexamined the results ofMcClearn's (1957) study on differentiation learning. When a discrete trial procedure analogous toMcClearn's was used, the subjects (two Japanese monkeys;Macaca fuscata fuscata) persisted in responding on S- trials, replicatingMcClearn's results. However, when a free operant procedure was used, in which the response manipulandum was continually available, the subjects made few responses during S- trials and showed almost complete differentiation. It was concluded that the discrete presentation of the manipulandum itself has some obstructive effects on differentiation, or successive discrimination learning.
KeywordsOperant Procedure Animal Ecology Discriminative Stimulus Discrimination Learning Differentiation Learning
Unable to display preview. Download preview PDF.
- Brown, P. &H. M. Jenkins, 1968. Auto-shaping of the pigeon's key peck.Jour. Experiment. Anal. Behav., 11: 1.Google Scholar
- Gamzu, E. &E. Schwam, 1974. Autoshaping and automaintenance of a key-press response in squirrel monkeys.Jour. Experiment. Anal. Behav., 21: 361.Google Scholar
- Gross, C. G., 1963. A comparison of the effects of partial and total lateral frontal lesions on test performance by monkeys.Jour. comp. Physiol. Psychol., 56: 41.Google Scholar
- ———— &L. Weiskrantz, 1962. Evidence for dissociation of impairment on auditory discrimination and delayed response following lateral frontal lesions in monkeys.Experiment. Neurol., 4: 453.Google Scholar
- Logan, F. A. &D. P. Ferraro, 1970. From free responding to discrete trials. In:The Theory of Reinforcement Schedules,W. N. Schoenfeld (ed.), Appleton-Century-Crofts, New York.Google Scholar
- McClearn, G. E., 1957. Differentiation learning by monkeys.Jour. comp. Physiol. Psychol., 50: 436.Google Scholar
- Pavlov, I. P., 1927. (Tr. G. V. Anrep)Conditioned Reflexes. Oxford Univ., London.Google Scholar
- Weiskrantz, L., 1957. On some psychophysical techniques employing a single manipulandum.Brit. Jour. Psychol., 48: 189.Google Scholar