Answer:
Systematic desensitization
Step-by-step explanation:
Systematic desensitization: In psychology, the term "systematic desensitization" is described as one of the different forms of behavior therapy wherein counterconditioning is being used by the therapists in order to reduce the patient's anxiety associated or connected with a specific stimulus.
Steps involved in systematic desensitization:
1. Establishment of anxiety.
2. Mechanism responses are being learned.
3. Coping techniques through counterconditioning.
In the question above, the given statement states that psychotherapist is using systematic desensitization to reduce Walter's phobia.