Sal has poor social skills, which are interfering with his ability to make friends at school. his therapist demonstrates correct and appropriate social skills for him and then encourages sal to mimic them. the learning of social skills eventually occurs and is all a result of sal watching his therapist and then practicing the new skills with him. this technique is referred to as

The correct answer is participant modeling. 
Participant modeling refers to a psychotherapy technique in which a therapist demonstrates to a client how to behave in a certain situation or situations in gradual steps. After this, the client is encouraged to imitate the therapist's behavior step-by-step so that he or she can gradually learn how to behave appropriately and apply this behavior in his or her day-to-day life. 

Sometimes but itt depends, their is a lot if drugs on campus too so you really can't just say that