Harmful. Quote:
childmind.org/article/controversy-aro...“…the earliest form of applied behavior analysis [ABA] developed for autistic children by Dr. O. Ivaar Lovaas in the 1960s called Discrete Trial Training (DTT) …explains Susan Epstein, PhD, a clinical neuropsychologist. Use of aversive reinforcement methods, which included electric shocks, are not considered acceptable today.”