Clay uses the SWYC as its main screening engine. The SWYC (Survey of Well-Being in Young Children) is an age-specific, comprehensive, first-level screener developed by researchers at the Tufts Medical Center for children ages 1 month to 5 1/2 years old. The SWYC combines developmental and behavioral questions with screening for autism, parental depression, and other family risk factors. It is designed to be sensitive enough to identify any child who may be at risk and encourage parents to have conversations with their physician.