The topics of social skills development in adolescents and ways to promote this process have been amply investigated in both the clinical and educational literature. Yet, although this line of research has led to the development of many different approaches for this population, most have shown little effectiveness in promoting further social skills acquisition beyond the intervention context. The present study tested the efficacy of clinical strategies based on Functional Analytic Psychotherapy (FAP) to promote social skills in 5 participants aged 11 to 15 years. (Contains 2 figures.)