A good example of a variable-ratio schedule of reinforcement is:
a. weekly pay.
c. fishing.
b. piece-rate pay.
d. state lottery.
ANS: D
FEEDBACK: A variable-ratio schedule of reinforcement is based on an average number of responses between reinforcers, but there is great variability around that average. Slot machines, roulette wheels, horse races, and state lottery games pay on a variable-ratio reinforcement schedule, an extremely effective means of controlling behavior.
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