Social Communication Questionnaire
Social Communication Questionnaire (SCQ) · Also known as: SCQ, SCQ-Lifetime, SCQ-Current
The Social Communication Questionnaire (SCQ) is a 40-item parent-report measure of autism-spectrum symptoms in children ages 4–15 years. Developed by Michael Rutter, Ann Bailey, and Catherine Lord in 2003, it serves as a brief screening tool for autism spectrum disorder. The SCQ asks parents to recall or report current child behaviors in three domains: reciprocal social interaction, communication, and restricted/repetitive behaviors/interests. It is frequently used in primary care, developmental pediatrics, and research settings to identify children warranting comprehensive autism evaluation.
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When to use it
Primary uses: (1) Screening for autism spectrum disorder in pediatric primary care (developmental surveillance during well-child visits); (2) identifying children with autism concerns for referral to developmental pediatrics or psychology; (3) baseline assessment prior to formal autism diagnostic evaluation with ADOS-2 and ADI-R; (4) research on autism prevalence, familial clustering, or early developmental trajectories; (5) educational settings to identify students who may need special education evaluation for autism. Particularly useful when comprehensive diagnostic evaluation (ADOS-2, ADI-R) is not immediately available.
Strengths & limitations
- Brief (40 items) and easy to administer by parent in waiting room or via mail; reduces clinic burden.
- High sensitivity and specificity for autism spectrum disorder across age ranges and cognitive levels; good diagnostic accuracy in both clinic and population samples.
- Parent-reported developmental history (SCQ-Lifetime) provides information about onset and early development that child self-report cannot.
- Free or low-cost; widely available; no licensing restrictions in many jurisdictions.
- Extensively validated across cultures; available in 30+ languages.
- Items directly aligned with DSM-5 autism criteria; facilitates diagnostic formulation.
- Two versions (Lifetime and Current) allow flexibility based on clinical context.
- Parent-report only; does not include clinician observation. Some parents may minimize or deny autism symptoms due to stigma or lack of awareness.
- Does not assess sensory sensitivities (hypersensitivity to sound, touch, light) that are prominent in many autistic children; restricted to behavioral observations.
- Poor discriminant validity between autism and other developmental disorders (intellectual disability, language disorder, ADHD) without additional assessment.
- Less sensitive in very high IQ children or girls with autism who may show subtle, well-compensated traits.
- SCQ scores correlate moderately (r ~0.60) with ADOS-2; approximately 15–20% of high-scoring children do not meet autism criteria on structured observation.
Frequently asked
If my child's SCQ score is 16, does that mean they definitely have autism?
An SCQ score of 16 indicates significant autism-spectrum symptoms and warrants formal evaluation with ADOS-2 and ADI-R. However, SCQ ≥15 does not diagnose autism—approximately 15–20% of parents whose children score this high report that their child does not meet full autism diagnostic criteria. Diagnosis requires developmental history (from ADI-R), direct observation (ADOS-2), and assessment of functional impairment.
My child was not diagnosed with autism when young but is struggling socially now. Is it too late to screen with SCQ?
SCQ-Lifetime asks about behaviors from early childhood onward, so it captures the developmental history needed for diagnosis even if the child is now older. If developmental information is unavailable (e.g., adopted children), SCQ-Current (past 3 months) can be used alongside clinical interview. For adolescents >15 years, the ADOS-2 adolescent module or clinical interview may be more appropriate than SCQ.
Can SCQ differentiate autism from ADHD?
No. SCQ measures social-communication and repetitive behaviors but does not assess attention or impulse control (ADHD domains). Children can have both autism and ADHD. If SCQ is elevated, also administer ADHD rating scales (Vanderbilt, Conners) and conduct clinical interview about attention and executive function. Both diagnoses may be appropriate.
Does SCQ work the same way for children with intellectual disability?
SCQ is valid for intellectual disability, but cutoff scores are slightly higher. A child with intellectual disability and autism typically scores ≥15 on SCQ; however, some children with intellectual disability score elevated on SCQ without autism. Always administer ADOS-2 (which has modules for different cognitive/language levels) and developmental assessment to clarify autism vs. global developmental delay.
Sources
- Rutter, M., Bailey, A., & Lord, C. (2003). The Social Communication Questionnaire: Manual. Western Psychological Services. ISBN: 0874119588
- Berument, S. K., Rutter, M., Lord, C., Pickles, A., & Bailey, A. (1999). Autism screening questionnaire: Diagnostic validity. British Journal of Psychiatry, 175(5), 444–451. DOI: 10.1192/bjp.175.5.444 ↗
How to cite this page
ScholarGate. (2026, June 3). Social Communication Questionnaire (SCQ). ScholarGate. https://scholargate.app/en/child-psychiatry/social-communication-questionnaire
Which method?
Set this method beside its closest kin and read them side by side — the library lays the books on the table; the choice is yours.
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