Morton suffers from anxiety. His therapist is training him to replace his catastrophizing thinking with more realistic appraisals, and then to gradually engage in activities that normally would be stressful for him. The therapist's approach BEST illustrates:

Cognitive-behavioral therapy (CBT)

Explanation: Cognitive-behavioral therapy (CBT) is a popular integrative therapy that combines cognitive therapy (changing self-defeating thinking) with behavioral therapy (changing behavior). It helps patients understand the thoughts and feelings that influence behaviors. CBT is commonly used to treat a wide range of disorders, including phobias, addictions, depression, and anxiety.

answer; /// i believe the correct answer is (when one group has an extremely high score at pretest;