There are two main types of therapy: psychotherapy which uses psychological techniques to treat mental health issues, and biomedical therapy which uses medications and medical interventions. Psychoanalysis developed by Sigmund Freud is based on understanding repressed unconscious conflicts through techniques like free association, dream interpretation, and analysis of transference in therapy. Modern therapies are generally shorter-term and more goal-oriented than traditional psychoanalysis. Behavioral therapy uses principles of conditioning to change maladaptive behaviors, while cognitive-behavioral therapy integrates cognitive and behavioral techniques. Psychotherapy has been shown to be more effective than no treatment, and the specific type of therapy is generally less important than the therapeutic relationship.