Early identification of autism spectrum disorders (ASDs) is facilitated by the use of standardized screening scales that assess the social emotional behaviors associated with ASD. Authors examined accuracy of Brief Infant-Toddler Social and Emotional Assessment (BITSEA) subscales in detecting Modified Checklist for Autism in Toddlers (M-CHAT) risk for 456 toddlers. An ASD-specific screener, Total ASD, was developed from BITSEA subscales incorporating both behavioral and social communicative features of ASD. Results indicated that Total ASD is more accurate in detecting autism risk than scales measuring general behavior problems or social competence. Results provide support for the BITSEA as a Level I screener for social emotional problems and a Level II screener for ASD symptoms at community sites such as well child clinics. (Contains 6 tables.)