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Journal Article

Progressive Ratio as a Measure of Reward Strength

William Hodos
Science
New Series, Vol. 134, No. 3483 (Sep. 29, 1961), pp. 943-944
Stable URL: http://www.jstor.org/stable/1708217
Page Count: 2

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Topics: Rats, Milk, Water temperature, Psychological reinforcement, Motivation
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Abstract

Four rats were trained to press a lever on a ratio schedule of reinforcement in which the number of lever presses required on each consecutive run increased by a fixed increment. Both concentration and volume of the reward were varied. Relationships were obtained between reward and deprivation variables and the size of the final completed ratio run.

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