Based on an affective relationship and on a non directive approach, considering the level of the child's evolution and proposing activities settled on the proximal zone of development of the autistic child, the therapy we propose, "Affective and Cognitive Supportive Therapy" (ACST) (Therapie d'etayage affectif et cognitif (TEACH) improve the socioemotional and cognitive capacity of the autistic child. This evolution is measured by the BECS (Batterie d'évaluation du développement sociocognitif-Adrien) and the study of the interactions between the therapist and the child.