Individuals with Autism Spectrum Disorder (ASD) exhibit a wide range of functional and psychological problems. A plethora of evidence- and non-evidence based treatments exist to address core deficits in social-emotional functioning, adaptive behaviors, executive functioning, and psycho-social adjustment with adolescents with ASD. The autistic phenotype often includes difficulties with receptive and expressive language, including comprehension, vocabulary understanding and use, and interpretation of social behaviors. This project will look at the level of understanding associated with three established talk therapies by surveying typically-developing adolescents and adolescents with ASD on concepts and vocabulary integral to these three therapies; essentially adding comparative information related to the level of understanding required for successful participation in these therapies.