Abstract
In a symbolic matching-to-sample task, pigeons were trained using sample-specific, fixed-ratio “observing responses.” Subsequently, in a mixed condition, each sample was presented equally often with each ratio requirement, i.e., the ratios were no longer correlated with the samples. In a second experiment, pigeons were trained initially in the mixed condition and subsequently shifted to the sample-specific condition in which the required ratios were correlated with the samples. Results of both experiments suggested joint control of choices by ratio value and by the exteroceptive stimuli. The discriminative properties of the ratios appeared to outweigh absolute ratio-size effects.
Keywords: symbolic matching to sample, sample-specific responses, discriminative ratios, conditional discrimination, compound control, key pecks, pigeons
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Selected References
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- Cohen L. R., Looney T. A., Brady J. H., Aucella A. F. Differential sample response schedules in the acquisition of conditional discriminations by pigeons. J Exp Anal Behav. 1976 Sep;26(2):301–314. doi: 10.1901/jeab.1976.26-301. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Eckerman D. A., Lanson R. N., Cumming W. W. Acquisition and maintenance of matching without a required observing response. J Exp Anal Behav. 1968 Jul;11(4):435–441. doi: 10.1901/jeab.1968.11-435. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hobson S. L. Discriminability of fixed-ratio schedules for pigeons: effects of absolute ratio size. J Exp Anal Behav. 1975 Jan;23(1):25–35. doi: 10.1901/jeab.1975.23-25. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lydersen T., Perkins D. Effects of response-produced stimuli upon conditional discrimination performance. J Exp Anal Behav. 1974 Mar;21(2):307–314. doi: 10.1901/jeab.1974.21-307. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Pliskoff S. S., Goldiamond I. Some discriminative properties of fixed ratio performance in the pigeon. J Exp Anal Behav. 1966 Jan;9(1):1–9. doi: 10.1901/jeab.1966.9-1. [DOI] [PMC free article] [PubMed] [Google Scholar]
- RILLING M., MCDIARMID C. SIGNAL DETECTION IN FIXED-RATIO SCHEDULES. Science. 1965 Apr 23;148(3669):526–527. doi: 10.1126/science.148.3669.526. [DOI] [PubMed] [Google Scholar]
- Urcuioli P. J., Honig W. K. Control of choice in conditional discriminations by sample-specific behaviors. J Exp Psychol Anim Behav Process. 1980 Jul;6(3):251–277. [PubMed] [Google Scholar]