What is the criterion for the extinction of Sniffy’s bar pressing?
a. No bar presses for at least 5 minutes
b. No more than 2 bar presses during a 5-minute interval
c. No more than 5 bar presses during a 10-minute interval
d. No more than 10 bar presses during a 10-minute interval
b. No more than 2 bar presses during a 5-minute interval
Answer feedback: The extinction criterion has been met when a 5-minute interval has passed in which no more than 2 bar presses occurred.
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