The results of outcome research on the effectiveness of different psychotherapies reveal that

A) no single type of therapy is consistently superior.
B) behavior therapies are most effective in treating specific problems,such as phobias.
C) cognitive therapies are most effective in treating depressed emotions.
D) all of these statements are true.

Outcome Research

Studies designed to assess the effectiveness of health-care treatments and interventions, measuring the end results of health services.

Behavior Therapies

A range of therapies focusing on altering problematic behaviors through learning principles, including conditioning and reinforcement.

Cognitive Therapies

A category of psychotherapies that focus on changing negative patterns of thinking to improve mental well-being.