Tim’s therapist is describing the process of extinction.
Explanation:
Extinction is the term used in psychology to describe the common behavior of a person. Extinction refers to weakening of the behavior due to decreasing in conditioned response.
The disappearance of the behavior of the individual is described as the extinction.
In the above scenario, Tim was addicted to alcohol. But he decided to stop drinking it. Tim finds some difficulty to avoid alcohol while meeting his friends. Tim’s therapist suggests him that if he could control himself from drinking in the social event he can gradually stop drinking alcohol.