Nicole's parents are trying to decrease the number of phone calls that she makes in a day. If Nicole makes fewer than 5 calls in a day, she is allowed to have a friend over the next day. In which DRL variation is the reinforcer delivered if the number of responses that occur in a period of time is less than a specified level?

full-session DRL

Explanation:

In Full-session Differential Reinforcement of Low Rates of responding (DRL), the implementer delivers a reinforcer as long as the behavior occurs less often that the number of times that was specified in the course of the entire session. From the question, the parents are trying to reduce her number of phone calls in a day and hence if she makes fewer calls than the specified number, then her friends are allowed to visit the next day.

answer; protectionism fosters competition and keeps price regulated;