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NDAR provides a single access to de-identified autism research data. For permission to download data, you will need an NDAR account with approved access to NDAR or a connected repository (AGRE, IAN, or the ATP). For NDAR access, you need to be a research investigator sponsored by an NIH recognized institution with federal wide assurance. See Request Access for more information.

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This is a U.S. Government computer system, which may be accessed and used only for authorized Government business by authorized personnel. Unauthorized access or use of this computer system may subject violators to criminal, civil, and/or administrative action. All information on this computer system may be intercepted, recorded, read, copied, and disclosed by and to authorized personnel for official purposes, including criminal investigations. Such information includes sensitive data encrypted to comply with confidentiality and privacy requirements. Access or use of this computer system by any person, whether authorized or unauthorized, constitutes consent to these terms. There is no right of privacy in this system.

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Privacy Policy

If you visit the NDAR web site:

We store only the following information: the domain name from which you access the Internet, the date and time you access our site, and the Internet address of the web site from which you direct-linked to our site. This information is used to measure the number of visitors to the various sections of our site and to help us make our site more useful to visitors. Unless it is specifically stated otherwise, no additional information will be collected about you. We may also use cookies only for internal tracking and for providing a better customer experience. No data we collect is shared with any other parties.

If you send us an e-mail:

When inquiries are e-mailed to us, we store the question and the e-mail address information so that we can respond electronically. By sending us an electronic mail message, you may be sending us personal information (e.g., name, address, e-mail address), subject to an official Freedom of Information Act request. We may store the name and address of the requester in order to respond to the request or to otherwise resolve the subject matter of your e-mail. Unless otherwise required by statute, we do not identify publicly who sends questions or comments to our web site.

If you subscribe to NDAR Listservs:

When you subscribe to an NDAR Listserv, you may be sending us personal information (e.g., name, address, e-mail address) subject to an official Freedom of Information Act request. Unless otherwise required by statute, NDAR does not publicly identify those who subscribe to our Listservs.

If you send us any other information:

With the goal of providing better service to our users, some of our sites may include questionnaires, feedback forms, or other means to determine a visitor's interests. We will not obtain information that will allow us to personally identify you when you visit our site, unless you chose to provide such information to us. Regardless of the information being transmitted to NDAR, we will protect all such information consistent with applicable law.

Questions about NDAR Privacy Policy should be sent to the NDAR Webmaster.