Abstract
This report discusses how to intervene in severe autistic disorders based on a longitudinal study of four cases. Four points of view are important. First I propose the idea that patients should live their lives to the fullest, humanly while accepting various suppose (which means that they live with their family at home, or in their community). This is the basic starting point. In order to realize that, three other points of view are importat; (1) Speech therapists must invent individual alternative non-vocal communication systems and therapy strategies. (2) Speech therapists must advise the patient's family on how to teach the necessary words and skills for daily life by helping around the house. (3) Speech therapists mustn't drive their patient's family (especially the mother) to use too much energy on the patient.