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Fixed ratio is a schedule of reinforcement. In this schedule, reinforcement is delivered after the completion of a number of responses. The required number of responses remains constant. The schedule is denoted as FR-#, with the number specifying the number of responses that must be produced to attain reinforcement. In an FR-3 schedule, 3 responses must be produced in order to obtain reinforcement. In an FR-15 schedule, 15 responses must be emitted before reinforcement is delivered. This ratio requirement (number of responses to produce reinforcement) is conceptualized as a response unit. In other words, it is the response unit (not the last response) that leads to the reinforcer (Cooper et al. 2007; Skinner 1938).
Applications of FR schedules can be found in business and in education. Some tasks are paid on an FR schedule (e.g., piecework). Students might receive a token after the completion of ten spelling words.
FR schedules are associated with a...
References and Reading
Cooper, J. O., Heron, T. E., & Heward, W. L. (2007). Applied behavior analysis (2nd ed.). Upper Saddle River: Pearson.
Skinner, B. F. (1938). The behavior of organisms. New York: Appleton.
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Weiss, M.J., Russo, S. (2018). Fixed Ratio. In: Volkmar, F. (eds) Encyclopedia of Autism Spectrum Disorders. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-6435-8_1909-3
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DOI: https://doi.org/10.1007/978-1-4614-6435-8_1909-3
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