Bipolar disorder is a serious medical illness that causes shifts in a person's mood, energy, and ability to function. These changes are drastic, and can result in damaged relationships, poor job or school performance, and suicide. Bipolar disorder is also known as manic-depressive disorder because it is characterized by episodes of mania and depression. Some signs and symptoms of a manic episode include the following: increased energy, activity, and restlessness; excessively "high," overly good mood; and extreme irritability. Some signs and symptoms of a depressive episode include the following: sad, anxious, or empty mood; feelings of hopelessness or pessimism; and feelings of guilt, worthlessness, or helplessness. Bipolar disorder is most effectively treated using a strategy that combines medication and psychosocial treatment. This study will evaluate the effectiveness of IPSRT versus CSSRT in reinforcing the treatment of bipolar disorder in individuals who are currently undergoing maintenance medication treatment for the disorder.