摘要:Purpose: to evaluate the efficacy of the speech and language therapy for Autistic Spectrum Disorders. Methods: the sample was composed of 11 children. These children were randomly divided into two groups: Six were receiving both direct and indirect intervention (TG group), and five were receiving exclusively indirect intervention (OG Group). We used the following parts of ASIEP-2: Autism Behavior Checklist, Interaction Assessment and Sample of Vocal Behavior on three occasions: at the beginning, six months later and 12 months later. Results: we observed there was greater evolution of Therapy Group-TG in the Autism Behavior Checklist, Interaction Assessment and Sample of Vocal Behavior. The mothers and the Speech Language Pathologist perceived behavioral changes. Conclusions: the tendency of better performance of the children attended in direct and indirect intervention showed that this association was fundamental.