First Years Inventory-Lite Version 3.1b (FYIv3.1b-Lite)

The FYIv3.1b-Lite (Baranek et al., 2014) is a 25-item caregiver-report screening tool for identification of sensory regulation and social communication risk markers for later development of autism in 11-16-month-old infants. Items on the FYIv3.1b-Lite are a subset of items from the First Years Inventory version 3.1 (FYIv3.1; Baranek et al., 2013), which has a total of 69 items. The original version of the First Year Inventory (FYIv2.0; Baranek et al., 2003) was validated in several studies as a screening tool to identify 12-month-old infants in the community at elevated likelihood for eventual autism diagnosis (Ben-Sasson & Carter, 2013; Reznick et al., 2007; Turner-Brown et al., 2013; Watson et al., 2007), and showed sensitivity of 92%, and specificity of 78% for a clinical diagnosis of autism at age 3 years (Watson et al., 2007). Likewise, positive predictive value metrics indicated that a positive screen yielded 1 in 3 children that would go on to have autism, and 2 in 3 that would have a developmental condition/concerns, including autism, by 3 years of age (Turner-Brown et al., 2013). The FYIv3.1b-Lite was used to determine eligibility for the larger parent study.