Table 3.

Exclusion criteria

TD and US exclusion criteria

1. Diagnosed, referred, or suspected ASD, schizophrenia, or other developmental or psychiatric disorder.

2. First- or second-degree relative with diagnosed, referred, or suspected ASD (except sibling of proband with ASD in the case of US).

3. An individual education plan for special education services, including speech/language therapy, occupational therapy, and social skills therapy.

4. Low or moderately low score on any domain of the Vineland Adaptive Behavior Scale-II.

5. Total T score >76 (severe range) on the SRS.

6. Clinical impression suggesting ASD, other developmental delay/disorder, or psychiatric disorder by the highly experienced multidisciplinary clinical team at Yale Child Study Center Characterization Core.

Additional US exclusion criteria

1. Parents with elevated spousal ratings on the SRS or self-ratings on the BAP-Q (22).