Please note: No shared data is currently available in ABCD.

Future data will be shared in the ABCD Study Collection.

ABCD was established to store and share data generated by investigators as part of the ABCD Study.

The NIH seeks to encourage the use of these resources to achieve rapid scientific progress. In order to take full advantage of such resources and maximize their research value, it is important that data be made available, on appropriate terms and conditions, to the largest number of qualified investigators in a timely manner.


The ABCD Study is a landmark, longitudinal study of brain development and child health. Investigators at 21 sites around the country will measure brain maturation in the context of social, emotional and cognitive development, as well as a variety of health and environmental outcomes. For more information about the ABCD Study, please visit the ABCD Study website