Updating some slides about data sharing just now and was greeted by this banner at the top of the NDAR (AKA NIMH data archive, NDA, https://nda.nih.gov/) homepage. I don't know when the banner appeared; I last visited the site maybe a month ago.
Many NIH-funded human neuroscience-related projects are required to submit data (behavioral questionnaires, neuroimaging, many others) to NDAR, including some of the largest US fMRI projects (HCP, ABCD).
I consider its Data Dictionary a "least-bad" way to usefully share questionnaire data (it's no help to know that someone answered "5" to item 3 without knowing the question and answer that refers to).
Anyone know anything about the banner or NDAR's future?