ABCD Wiki
The 5.1 Patch Release addressed some issues from the 5.0 Data Release. Please click here for further information.
Welcome to the Wiki of the Adolescent Brain Cognitive Development℠ (ABCD) Study!
An overview of the ABCD Study® can be found at abcdstudy.org and detailed descriptions of the assessment protocols are available at ABCD Protocols.
Some users have noted issues in downloading the data, which are addressed in the FAQ. Please refer to the Release Notes on this website for more detailed information.
Please note that NDA no longer requires an NDA Study to be created for public disclosure of results pertaining to ABCD analysis. This will be reinstated in future data releases.
Please visit Now I Know My ABCD for a discussion forum regarding ABCD data. Note that the forum is designed by and for external users to engage in open conversations and exchange ideas related to ABCD data use. The forum serves as a platform for discussions, but the content and opinions expressed may not always be validated or endorsed by ABCD.