Answer:
Behavior modification
Step-by-step explanation:
In psychology and psychotherapy, the term Behavior modification refers to the approach used in therapy that focuses on changing undesirable/negative behaviors.
This is done by using special techniques and a systematic program by which the client identifies the problematic behaviors and develops strategies to stop them and change them to a more desirable/positive behavior. This approach has its base on the principles of classical and operant conditioning.
Therefore, the method of changing behavior through a systematic program based on learning principles is called: behavior modification.