Abstract
For two female college Ss, different procedures were used to produce comparable probabilities of lever responding for points and music. Both of these equally probable responses then were made contingent upon responding on a third lever on CRF, FR-5, and FR-10 reinforcement schedules. For all three schedules, the two equally probable responses produced comparable reinforced response increments. In a second experiment, a sequence of procedures was used which produced equal probabilities of responding for music and points, then a higher probability of responding for music relative to responding for points, then the converse probabilities. Responding on a CRF schedule varied directly with the probability of the reinforcing response. The results of both experiments were interpreted as support for Premack’s indifference principle.
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Schaeffer, R.W., Bauermeister, J.J. & David, J.H. A test of Premack’s “indifference principle”. Bull. Psychon. Soc. 1, 399–401 (1973). https://doi.org/10.3758/BF03334383
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DOI: https://doi.org/10.3758/BF03334383