DA 1 By N., Sam M.S. - 39 1. abbreviated form of dopamine. 2. abbreviated form of developmental age. DA 1: "While John was 23 years old, the Asperger's diagnosis since he was 4 guaranteed he would never exceed the developmental age of a 12-year old." Related Psychology Terms Developing a Case Study Diagnosis and Treatment Planning ADOLESCENCE (Theories) Piaget’s Theory of Cognitive Development MENTAL RETARDATION (PREVENTION, CARE, AND TREATMENT) EARLY INFANTILE AUTISM CHILD PSYCHOLOGY Dissociative Identity Disorder A Comparison of Maternal and Paternal Filicide CLINICAL PSYCHOLOGY Cite this page: N., Sam M.S., "DA 1," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/da-1/ (accessed December 8, 2022).