The investigators plan to collect these data from 3 groups of adolescents with ASD varying in language skills (minimally verbal, verbal-language impaired, verbal-language normal) and age and gender matched non-ASD typical adolescents. The participants will be diagnosed and tested using a range of standardized and non-standardized assessments including IQ/cognitive level; social abilities; ASD severity; communication skills (nonverbal). These assessments will be carried out by trained examiners in the clinical core housed at BU.