Public Datasets
These datasets can be downloaded at any time and are generally broadly usable in any form with appropriate acknowledgement. While not all require Human Subjects training as a condition of their use, we highly recommend that anyone working with data be fully trained in dealing with Human Subjects data as a general course of action to properly recognize when such distinctions need to be made.
Datasets via Request
These datasets are more restrictive generally requiring a request and possibly a Data Usage Agreement (DUA) before access is provided.