0 01:30 Negation: Ph3 Say vs Don’t Say This phase teaches the student to not copy phrases when the therapist says “don’t say,” but still copy when asked.
0 01:30 Negation: Ph2 Don’t Do This This phase teaches a student to not do an action when the therapist says “don’t do,” even actions he likes.
0 01:30 Negation: Ph1 No This phase teaches the student to say “no” when presented with something he does not like.