This document discusses different types of psychotherapies including behavioral therapy, psychoanalytic therapy, cognitive therapy, and humanistic therapy. It focuses on behavioral therapy, outlining its key assumptions, principles, indications, and techniques. Behavioral therapy aims to modify maladaptive behaviors through reinforcement of adaptive behaviors based on principles of classical and operant conditioning. Techniques may include desensitization, flooding, exposure therapy, and aversion therapy. Advantages are its empirical evidence-base and collaboration between therapist and client, while disadvantages are its lack of insight and focus only on symptoms.