Abstract
The role of stimuli in chained fixed-ratio schedules of reinforcement was examined. At various ratio values, responding on schedules consisting of three or five equal components, with a different colored light in each component (“block counter”) was compared with responding on tandem or simple fixed-ratio schedules having the same color present throughout the entire ratio. At all ratio values except the smallest, the chain stimuli resulted in longer pauses after reinforcement. The magnitude of this effect became greater as the size of the ratio was increased. Post-reinforcement pause durations were longer under five-component schedules than under three-component schedules. Running rates in the first component were lower on the chained schedules than on the tandem schedules; on both kinds of schedule, rates were lower in the first component than in the rest of the ratio. When the sequence of stimuli was reversed, the duration of the post-reinforcement pause dropped markedly and the running rate in the initial component increased, but these effects gradually disappeared after the first reversal session. When the final chain stimulus was substituted for the first component stimulus but continued to appear in the final chain component as well, the pause duration dropped and remained at this lower level during subsequent sessions.
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Selected References
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- AZRIN N. H., HOLZ W. C., HAKE D. F., AYLLON T. Fixed-ratio escape reinforcement. J Exp Anal Behav. 1963 Jul;6:449–456. doi: 10.1901/jeab.1963.6-449. [DOI] [PMC free article] [PubMed] [Google Scholar]
- AZRIN N. H. Punishment and recovery during fixed-ratio performance. J Exp Anal Behav. 1959 Oct;2:301–305. doi: 10.1901/jeab.1959.2-301. [DOI] [PMC free article] [PubMed] [Google Scholar]
- DEWS P. B. Modification by drugs of performance on simple schedules of positive reinforcement. Ann N Y Acad Sci. 1956 Nov 2;65(4):268–281. doi: 10.1111/j.1749-6632.1956.tb49639.x. [DOI] [PubMed] [Google Scholar]
- FINDLEY J. D. An experimental outline for building and exploring multi-operant behavior repertoires. J Exp Anal Behav. 1962 Jan;5(Suppl):113–166. doi: 10.1901/jeab.1962.5-s113. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Felton M., Lyon D. O. The post-reinforcement pause. J Exp Anal Behav. 1966 Mar;9(2):131–134. doi: 10.1901/jeab.1966.9-131. [DOI] [PMC free article] [PubMed] [Google Scholar]
- KELLEHER R. T., FRY W. T. Stimulus functions in chained fixed-interval schedules. J Exp Anal Behav. 1962 Apr;5:167–173. doi: 10.1901/jeab.1962.5-167. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Powell R. W. The effect of small sequential changes in fixed-ratio size upon the post-reinforcement pause. J Exp Anal Behav. 1968 Sep;11(5):589–593. doi: 10.1901/jeab.1968.11-589. [DOI] [PMC free article] [PubMed] [Google Scholar]
- SIDMAN M., STEBBINS W. C. Satiation effects under fixed-ratio schedules of reinforcement. J Comp Physiol Psychol. 1954 Apr;47(2):114–116. doi: 10.1037/h0054127. [DOI] [PubMed] [Google Scholar]
- SUBOSKI M. D. COMPARISON OF FIXED AND VARIABLE-RATIO SCHEDULES OF REINFORCEMENT. J Comp Physiol Psychol. 1965 Feb;59:152–154. doi: 10.1037/h0021630. [DOI] [PubMed] [Google Scholar]
- THOMAS J. R. MULTIPLE BASELINE INVESTIGATION OF STIMULUS FUNCTIONS IN AN FR CHAINED SCHEDULE. J Exp Anal Behav. 1964 May;7:241–245. doi: 10.1901/jeab.1964.7-241. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Thomas J. R. Differential effects of two phenothiazines on chain and tandem schedule performance. J Pharmacol Exp Ther. 1966 May;152(2):354–361. [PubMed] [Google Scholar]