Abstract
Six pigeons were discrimination trained on wavelength stimuli and tested for postdiscrimination generalization gradients. Three were trained on Mult FI 30-sec (.50 reinforcements) extinction and three on VI 60-sec as a control. No peak shifts were found in the Fl-trained birds. The Vl-trained birds failed to show consistent peak shifts, a fact which suggests that the number of S+ days provided prior to discrimination training may be an effective variable in the production of peak shift.
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Reference
McLEAN, J. F. Feak shift: Effects of reward schedule and S— duration. Unpublished Master’s thesis, Stanford University, 1970.
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This research was supported in part by Grants GB-5853 and GB-8506 from the National Science Foundation and by Research Career Award 1-K-6-MH22023 to the first author from the National Institute of Mental Health.
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Marx, M.H., McLean, J. Postdiscrimination gradients as a function of variation in reward schedules. Psychon Sci 23, 55–56 (1971). https://doi.org/10.3758/BF03336004
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DOI: https://doi.org/10.3758/BF03336004