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Variable-Ratio Schedules: The Science of Getting Hooked


Scientifically Reviewed · Dr. Marwa Abd-Alazim · September 11, 2026
Medically & Scientifically Reviewed Verified: September 11, 2026
Dr. Marwa Abd-Alazim Ph.D.
Professor of Psychology • University of Kerbala
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Variable-Ratio Schedules: The Science of Getting Hooked

Where reinforcements are scheduled randomly as determined by the number of responses needed for reinforcement. The number of responses varies from reinforcement to reinforcement.

RANDOM-RATIO SCHEDULE (RR SCHEDULE): “Random-ratio schedules feature a different number of responses needed for reinforcement from reinforcement to reinforcement. That is perhaps five responses needed for the first, 20 for the second and so on.”
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About the Author: Mohammed looti

Cite This Article

looti, M. (2026, September 11). Variable-Ratio Schedules: The Science of Getting Hooked. Encyclopedia of psychology. https://encyclopedia.arabpsychology.com/random-ratio-schedule-rr-schedule/
looti, Mohammed. “Variable-Ratio Schedules: The Science of Getting Hooked.” Encyclopedia of psychology, 11 September 2026, https://encyclopedia.arabpsychology.com/random-ratio-schedule-rr-schedule/.
looti, Mohammed. “Variable-Ratio Schedules: The Science of Getting Hooked.” Encyclopedia of psychology. September 11, 2026. https://encyclopedia.arabpsychology.com/random-ratio-schedule-rr-schedule/.