The sensitivity and specificity of the social communication questionnaire for autism spectrum with respect to age.

Barnard-Brak et al. (2016) tested the Social Communication Questionnaire (SCQ) across different ages. They wanted to see if the same cutoff score works for toddlers, kids, and teens.

The team looked at how often the SCQ correctly flags autism and how often it gives a false alarm. They checked if age changes these numbers.

The SCQ missed more cases and over-flagged more non-cases than older papers said. Accuracy was no longer "good" once age was counted.

The tool looked age-neutral on paper, but real data showed it is not.

Norris et al. (2010) and Hampton et al. (2015) both called the SCQ the best Level-2 parent screen. Their reviews lumped all ages together and gave it a thumbs-up. Barnard-Brak et al. (2016) split the group by age and the praise faded.

Jones et al. (2007) found high sensitivity in preschoolers with delays. Barnard-Brak et al. (2016) show that win does not hold across wider age ranges. Same tool, different question, different answer.

Tsai et al. (2017) later found culture and income also shift SCQ scores. Add that to Lucy’s age warning and you get a test that needs local, age-smart cutoffs.

Before you trust a single SCQ cutoff, look at the child’s age. If the score is near the line, gather extra data or run a follow-up interview. Update your intake packet to list age brackets next to the SCQ blank so no clinician misses the context.