Abstract
In Experiment 1, rats were trained to leverpress on a variable ratio (VR) 30 schedule with a 500-msec delay between the reinforced response and food delivery. Subjects that experienced a signal during the delay responded faster than did control subjects that received the stimulus un-correlated with reinforcement. Higher response rates were obtained when the stimulus used to signal reinforcement was auditory rather than visual. Experiments 2 and 3 compared the effects of signaling reinforcement with either a localized or a diffuse light on responding maintained by VR schedules of reinforcement. Elevated response rates were observed with the diffuse stimulus, but the localized stimulus failed to produce such potentiation. Experiment 3 also examined the conditioned reinforcing power of localized and diffuse visual stimuli. These results are discussed with reference to (1) theories of selective association and sign tracking and (2) their implications for current theories of signaling reinforcement.
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References
Dickinson, A., Peters, R. C., &Shecter, S. (1984). Overshadowing of responding on ratio and interval schedules by an independent predictor of reinforcement.Behavioral Processes,9, 421–429.
Edgar, D., Hall, G., &Pearce, J. M. (1981). Enhancement of food-rewarded instrumental responding by an appetitive conditioned stimulus.Quarterly Journal of Experimental Psychology,33B, 3–19.
Ferster, C. B., &Skinner, B. F. (1957).Schedules of reinforcement. Englewood Cliffs, NJ: Prentice-Hall.
Foree, D. D., &LoLordo, V. M. (1975). Stimulus-reinforcer interactions in the pigeon: The role of electric shock and the avoidance contingency.Journal of Experimental Psychology: Animal Behavior Processes,1, 39–46.
Harsh, J., Badia, P., &Ryan, K. (1984). Signal modality and choice between signalled and unsignalled food.Journal of the Experimental Analysis of Behavior,42, 279–289.
Hearst, E., &Jenkins, H. M. (1974).Sign-tracking: The stimulus-reinforcer relation and directed action. Austin, TX: The Psychonomic Society.
Holland, P. C. (1977). Conditioned stimulus as a determinant of the form of the Pavlovian conditioned responseJournal of Experimental Psychology: Animal Behavior Processes,3, 77–104.
Iversen, I. H. (1981). Response interactions with signalled delay of reinforcement.Behavior Analysis Letters,1, 3–9.
Karpicke, J., Christoph, G., Petersen, G., &Hearst, E. (1977) Signal location and positive versus negative conditioned suppression in the ratJournal of Experimental Psychology: Animal Behavior Processes,3, 105–118.
Morgan, M. J., Lea, S. E. G., &Nicholas, D. (1976). Choice of extinction signalling stimuli by rats.Learning & Motivation,7, 3149.
Morse, W. H. (1966). Intermittent reinforcement. In W. K. Homg (Ed.),Operant behavior. Areas of research and application (pp 52–108) Englewood Cliffs, NJ. Prentice-Hall.
Pear, J. J. (1985). Spatiotemporal patterns of behavior produced by variable-interval schedules of reinforcement.Journal of the Experimental Analysis of Behavior,44, 217–223.
Pearce, J. M., &Hall, G. (1978). Overshadowing the instrumental conditioning of a lever press response by a more valid predictor of the remforcer.Journal of Experimental Psychology Animal Behavior Processes,4, 356–367.
Peele, D. B., Casey, J., &Silberberg, A. (1984). Primacy of inter-response time reinforcement in accounting for rates under variable-ratio and variable-interval schedulesJournal of Experimental Psychology. Animal Behavior Processes,10, 149–167.
Reed, P., Schachtman, T. R., & Hall, G. (in press). Overshadowing and potentiation of instrumental responding in rats as a function of the schedule of reinforcement.Learning & Motivatior.
Roberts, J. E., Tarpy, R. M., &Cooney, N. (1985). The effects of signaled reward on sign-tracking and response rate.Animal Learning & Behavior,13, 13–17.
Roberts, J. E., Tarpy, R. M., &Lea, S. E. G. (1984). Stimulus-response overshadowing: Effects of signalling reward on instrumental responding as measured by response rate and resistance to change.Journal of Experimental Psychology: Animal Behavior Processes,10, 244–255.
Schachtman, T. R., Reed, P., &Hall, G. (1987). Enhancement and attenuation of instrumental responding by signals for reinforcement on a VI schedule.Journal of Experimental Psychology: Animal Behavior Processes,13, 271–279.
St. Claire-Smith, R. (1979). The overshadowing of instrumental conditioning by a stimulus that predicts reinforcement better than the response.Animal Learning & Behavior,7, 224–228.
Tarpy, R. M., Lea, S. E. G., &Midgley, M. (1983). The role of response-reward correlation in stimulus response overshadowing.Quarterly Journal of Experimental Psychology,35B, 53–65.
Tarpy, R. M., Roberts, J. E., Lea, S. E. G., &Midgley, M. (1984). The stimulus-response overshadowing phenomenon with VI versus FI schedules of reinforcementAnimal Learning & Behavior,12, 50–54.
Tarpy, R. M., St Claire-Smith, R., &Roberts, J. E. (1986). The effect of informational stimuli on instrumental response rate: Signalling reward versus signalling the availability of reward.Quarterly Journal of Experimental Psychology,38B, 173–189.
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This research was supported by a grant from the United Kingdom Science and Engineering Research Council to G Hall.
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Reed, P., Schachtman, T.R. & Hall, G. Potentiation of responding on a VR schedule by a stimulus correlated with reinforcement: Effects of diffuse and localized signals. Animal Learning & Behavior 16, 75–82 (1988). https://doi.org/10.3758/BF03209046
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DOI: https://doi.org/10.3758/BF03209046