Pack of 25 Examiner Summary Sheets for the DAYC-2. The Developmental Assessment of Young Children–Second Edition (DAYC-2) identifies children birth through 5;11 with possible delays in any of the following domains: cognition, communication, social-emotional development, physical development, and adaptive behavior. Domains can be assessed independently, so examiners may test only the domains that interest them or test all five domains when desiring a measure of general development.