HBCD Study Data Release 2.0

The HBCD Study Data Release 2.0 includes high-quality baseline and longitudinal data from over 3,500 participants, including minimally processed brain image volumes and tabulated structural magnetic resonance imaging (MRI), diffusion MRI, resting-state fMRI, task fMRI results, and electroencephalogram (EEG), as well as data from some of the biospecimens (including genetics), demographics, mental health, physical health, neuro cognition and language, novel technology (wearable sensors), behavior and caregiver-child interactions, pregnancy exposures including substance use, and social and environmental determinants. For neuroimaging assessments, this release contains Visit 2 (0–1 month), Visit 3 (3–9 months), and Visit 4 (9–15 months) data. For non-imaging assessments, this release contains longitudinal data from Visit 1 (prenatal), Visit 2 (0–1 month), Visit 3 (3–9 months), Visit 4 (9–15 months), and Visit 5 (10-17 months). For a detailed description of the data elements included in this release, visit the 2.0 release notes available at https://docs.hbcdstudy.org/.