Westbrook, Kennerley & Kirk (2011) outline that behavioral theory or cognitive-behavioral theory (CBT) assumes that the environment determines an individual’s behavior. Individuals respond to situations depending on the behaviors reinforced as a child. The behavioral theory evolved from the psychological research that behaviors can be measured and objectively viewed. I agree with behaviorists assert that behaviors can be learned and unlearned, unlike the psychodynamic approach that stresses that instincts determine behavior. The counselor should understand the undesirable behaviors that&nbsp.lead to client discomfort.