Abstract
For all rats half the daily acquisition intertriai intervals (ITI) were 8 min., half 30 sec. Reward followed nonreward at the 8 min. ITI in one group and at the 30 sec. ITI in the other. In extinction, trials occurred at a constant 8 min. ITI for half of each group, and at a constant 30 sec. ITI for the remaining half. Only the interaction between the acquisition nonreward-reward ITI and the extinction ITI was significant. These results suggest that the nonrewarded stimulus changes over time but that its response evoking power is neither increased nor decreased by the change.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Capaldi, E. J. A sequential hypothesis of instrumental learning. In K. W. Spence and J. Spence (Eds.), Recent advances in learning and motivation. New York: Academic Press, in press.
Capaldi, E. J., & Lynch, A. D. Patterning at 24-hr. ITI; resolution of a discrepancy more apparent than real. Psychon. Sci., 1966, 6, 229–230.
Capaldi, E. J., & Poynor, H. After effects and delay of reward. J. exp. Psychol., 1966, 71, 80–88.
Capaldi, E. J., & Stanley, L. R. Temporal properties of reinforcement. J. exp. Psychol., 1963, 65, 169–175.
Sheffield, V. F. Extinction as a function of partial reinforcement and distribution of practice. J. exp. Psychol., 1949, 39, 511–526.
Author information
Authors and Affiliations
Additional information
Note
1. This research was supported in part by National Institute of Child Health and Development Research Grant HD 00949-04 to the first author.
Rights and permissions
About this article
Cite this article
Capaldi, E.J., Minkoff, R. Change in the stimulus produced by nonreward as a function of time. Psychon Sci 6, 321–322 (1966). https://doi.org/10.3758/BF03330915
Published:
Issue Date:
DOI: https://doi.org/10.3758/BF03330915