Bart used to work out after work nearly every day,and his trainer would give him a lot of encouragement and support.Lately his trainer has been ignoring him,and Bart has been going to the gym a lot less frequently.Which process does this example illustrate

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Extinction is the process of reducing the frequency of a behavior by removing the reinforcement that previously maintained it. In this case, Bart used to work out frequently because his trainer provided encouragement and support, which served as a reinforcement for Bart's behavior. However, once the trainer stopped providing reinforcement, Bart's behavior decreased in frequency, indicating extinction.

Bart Used to Work Out After Work Nearly Every Day,and