The Journal of Developmental Disabilities is an Korean or English language journal, publishing original refereed articles on all aspects of Developmental Disabilities. The purpose of this journal is to improve the quality of life of people with developmental disabilities by reviewing and publishing meaningful research papers that include empirical research and theoretical arguments. Reports on developmental disabilities, models of developmental disabilities arising from real-world situations, critical reviews of special education policies and interventions in developmental disabilities, thoughtful replication of education, learning, and evaluation, and new interventions and educational techniques are welcomed. The journal welcomes high-quality research in any methodological tradition and is open to innovative and unusual approaches.