This grant supports an interdisciplinary research education program in Mental Health and Developmental Disabilities (MH/DD), a collaborative program which includes the University Center for Excellence in Developmental Disabilities (UCEDD) at Children's Hospital Boston, the STAART/Autism Center for Excellence at Boston University (BU), Harvard Medical School (HMS), and the Harvard School of Public Health (HSPH). The MH/DD program addresses urgent priorities for recruitment, retention, and training of young scientists in MH/DD research. The research domains include: developmental psychopathology, developmental cognitive neuroscience, child psychiatric epidemiology, interventions, services and policies- relevant to MH/DD. Trainees will participate in mentored research project and structured instruction for development of research ideas, ethics, and career management. The program will utilize collaborative learning, national and international research networks through IT, traditional contents/methods seminar, and keynote colloquia emphasizing MH/DD research themes. This program greatly enriches opportunities available to U.S. citizens/residents in mental health research in autism and many other serious childhood developmental disorders and offers both national and international perspectives for research capacity-building efforts worldwide, with U.S. investigators and the National Institute of Mental Health taking a leading role.