The overarching aim of the study is to characterize children and adults with ASDs, and compare them with age-matched controls in relation to their functioning in family, academic, employment, and social spheres. Subjects will be comprehensively assessed in multiple non-overlapping domains of functioning, using psychiatric, cognitive, and psychosocial instruments.

Inclusion Criteria:

• Age: 6-60 years old
• For subjects who have ASD: Meet DSM-IV PDD criteria based on clinical assessment including PDD module of structured interview
• For subjects who have ASD: One parent/guardian available for interviews about each subject. If a parent or guardian is not available, a reliable adult reporter identified by the subject available for an interview
• Full-scale IQ of above 80

Exclusion Criteria:

• Major sensorimotor handicaps (e.g. deafness, blindness)
• Any severely unstable psychiatric conditions including the following: psychosis, suicidality, bipolar disorder, substance use disorders (alcohol or drugs) that would require in-patient hospitalization.
• Inadequate command of the English language.

Children and adults with ASDs.

Controls: healthy volunteers who have never been diagnosed with an Autism Spectrum Disorder.