In social learning theory, behavior modeling is the precise demonstration of a desired behavior. According to the theory, we learn not only by doing, but by watching what others do. In a therapeutic setting, behavior modeling is purposeful and positive, teaching clients healthier ways of behaving. But behavior modeling can also be negative, such as a parent passing on a prejudiced way of dealing with others or a friend teaching a child to use drugs. Therapeutic behavior modeling is often used to help clients change previously learned negative behaviors.