The ABCD Data Repository houses all data generated by the Adolescent Brain Cognitive Development^SM (ABCD) Study. The ABCD Study^(R) is a prospective longitudinal study starting at the ages of 9-10 and following participants for 10 years. The study includes a diverse sample of nearly 12,000 youth enrolled at 21 research sites across the country. It measures brain development (via structural, task functional, and resting state functional imaging), social, emotional, and cognitive development, mental health, substance use and attitudes, gender identity and sexual health, biospecimens, as well as a variety of physical health, and environmental factors. In addition, various external databases have been linked with ABCD Study data providing information about local conditions for environment, poverty, pollution, school, and policy, as examples. These can be used for providing context when evaluating behavioral and brain development. For more information about the ABCD Study, please visit the ABCD Study website.

This repository stores data generated by ABCD investigators, serves as a collaborative platform for harmonizing these data, and shares the data with qualified researchers.

The ABCD Study is supported by NIH partners (the National Institute on Drug Abuse, the National Institute on Alcohol Abuse and Alcoholism, the National Cancer Institute, the Eunice Kennedy Shriver National Institute of Child Health and Human Development, the National Institute of Mental Health, the National Institute on Minority Health and Health Disparities, the National Institute of Neurological Disorders and Stroke, the National Heart, Lung, and Blood Institute, the National Institute of Justice, the NIH Office of Behavioral and Social Sciences Research, and the NIH Office of Research on Women’s Health), as well as the Centers for Disease Control and Prevention – Division of Adolescent and School Health.