In recent years an increasing number of adult autists who underwent orthodox behavioral therapies have reported that the experience was traumatic and in some cases even harmful.
Similarly, many behaviorists themselves have come to the conclusion that the orthodox approaches are too coercive and again can cause harm despite the best intentions of the therapist involved. It's not that it's wrong to try to show someone how to behave in a way that functions well in the neuro-typical world.
The acquisition of skills is always important. But addressing behaviors alone without understanding the underlying cause can ironically exacerbate dysfunctional behaviors rather than teach the desired skills.
A reward and punishment approach, which is effectively what most behaviorism boils down to, does not address the fact that cell danger response, anxiety and sometimes delayed or obstructed reasoning processes make it impossible for the client to understand either the reward or the punishment.
So the whole thing falls flat and just causes distress or creates an automaton that does not understand why they are following the therapist's desired responses.
Movement Method gives therapists the neuro-science to understand where the clients brain is, where it needs to go, and how to get there without the use of coercion, reward, punishment, shaming or any of the negative effects reported by an increasing number of autists and therapists who have become dissatisfied with orthodox behaviorism.
To really teach new skills, you need to take a very different, more compassion based approach.