PURPOSE: To verify the existence of correlation between the results found in the Functional Communicative Profile, the social-cognitive performance, the Autism Behavior Checklist, and the social-communicative adaptation along a period of six months. METHODS: Participants were eight institutionalized adolescents with Autism Spectrum Disorders, assessed regarding their functional communicative profile and social-cognitive performance. Parents, caretakers and therapists answered the Social-Communicative Adaptation and the Autistic Behavior Checklist questionnaires in the beginning of the study and six months later. Data were statistically analyzed using non-parametric techniques. RESULTS: Higher scores on the Autistic Behavior Checklist are associated to lower scores on social-cognitive performance and to lower number of communicative acts. CONCLUSION: There is association between the results in the Autistic Behavior Checklist and the functional communicative profile and the social-communicative performance, but the results in the social-communicative adaptation are not correlated with any of the other variables.