Harrison sends an e-
mail to his boss. Harrison expects a response within five minutes, but he can't help himself and
checks every 30 seconds. After five minutes, a replying e-mail is delivered just as he expected.
Which of the following statements is true?
A. Harrison is on a fixed-interval schedule of reinforcement.
B. Harrison is on a variable-interval schedule of reinforcement.
C. Harrison is on a fixed-ratio schedule of reinforcement.
D. Harrison is on a variable-ratio schedule of reinforcement.
Please select the best answer from the choices provided
A
B
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