National Center for the
Dissemination of Disability Research

Policy Statements

Accessibility Policy

The National Center for the Dissemination of Disability Research (NCDDR) is committed to ensuring accessibility of its Web site to as many potential visitors as possible. In an effort to provide accessible Web pages, the NCDDR staff follows these steps:

  1. All pages on our Web site will conform to W3C/WAI's Web Content Accessibility Guidelines 1.0 priority level II.
  2. Each page of the NCDDR Web site is reviewed according to the Web Content Accessibility Guidelines 1.0 (WCAG) and using Web-based accessibility analysis tools. Examples of these are the following:
    Total Validator also checks for compliance with Section 508 Guidelines. Section 508 of the Rehabilitation Act was enacted to eliminate barriers in information technology, to make available new opportunities for people with disabilities, and to encourage development of technologies that will help achieve these goals. The law applies to all Federal agencies when they develop, procure, maintain, or use electronic and information technology. Under Section 508 (29 U.S.C. 794d), agencies must give disabled employees and members of the public access to information that is comparable to the access available to others
  3. For multi-media features such as webcasts, images, PowerPoint documents, audio/video components, and other specialized Web-based applications, the NCDDR staff works closely with individual viewers and the W3C Web Accessibility in Mind (WebAim) discussion group to resolve accessibility challenges in order to identify and address accessibility barriers that may be inherent in certain designs or software applications.

Attribution and Disclaimer Statement

The National Center for the Dissemination of Disability Research (NCDDR) is funded under grant #H133A060028 from the National Institute on Disability and Rehabilitation Research (NIDRR) in the U.S. Department of Education's Office of Special Education and Rehabilitative Services (OSERS). NCDDR is funded 100 percent by NIDRR at $750,000 per project year. The NCDDR is operated by SEDL, which is an Equal Employment Opportunity/Affirmative Action Employer and is committed to affording equal employment opportunities for all individuals in all employment matters. Neither SEDL nor the NCDDR discriminate on the basis of age, sex, race, color, creed, religion, national origin, sexual orientation, marital or veteran status, or the presence of a disability. However, these contents do not necessarily represent the policy of the U.S. Department of Education, and you should not assume endorsement by the Federal government.

Unless otherwise specified, Contents © 1996-2009 SEDL. All graphics are the property of SEDL or the respective copyright holder and may not be duplicated without prior written permission. Other trademarks are the properties of the respective owners, and may or may not be used under license.

Privacy Policy

This policy applies to interactions with the National Center for the Dissemination of Disability Research (NCDDR) Web servers. RSS content is covered by the same Web policies as other content on this site. It does not apply to email sent to NCDDR staff or mail lists. Information posted to discussion forums, bulletin boards, chat rooms and other public forums may be displayed publicly. Any questions regarding the Web site and the privacy policy can be directed to

NCDDR understands the value of your personal information and we respect your right to privacy. We make no effort to identify public users of our site and we do not log the specific identity of visitors. No identifying data is disclosed to any third party for any purpose. Data that we collect is used only for server administration and our Web site usage research and reporting. If you register to receive our newsletters, participate in our workshops or purchase items from SEDL's publications catalog, we will ask for personal information such as your name, e-mail address, postal address, phone number or credit card information. If we want you to provide additional information, we will explain why we need the additional information and how it will be used at the time of the request.

Data Collection: We log HTTP requests to our server. This means that we know the originating IP address (e.g. of a user agent requesting a URL. We also know the Referrer and User-Agent information accompanied with an HTTP request. We analyze the log files monthly to determine which files are most requested and the referring site or user agent which prompted the request. Occasionally we conduct voluntary online surveys on a specific topic.

Archival of Information: Logged information is kept indefinitely as administrative and research material. Aggregated statistics (completely non-identifying) generated from these logs may be included in reports as part of research results.

Access, Correction and Maintenance of Personal Information: We provide reasonable and practical access for you to identify inaccuracies in your personal information. If you provide us with personal information through the NCDDR Web site, you have the right to access this data. To request an update, modification, or deletion of any personal information maintained by NCDDR, you can contact us at We will, upon request, update or delete your personal information.

Opt Out Process: If you are a U.S. Postal mail recipient and/or electronic mail list subscriber, you may receive direct mail or other News Alerts from NCDDR. At any time, you can "opt out" of receiving direct and/or electronic mail from the NCDDR by making a request to or by following the "unsubscribe" instructions contained within the communication.

Security of Personal Information: We store your personal information in a secure location that is accessible only by authorized staff. We make reasonable efforts to protect your personal information from loss, misuse, unauthorized access or disclosure, alteration or destruction. In addition, we use a secure server to protect the safety and security of transactions over the Internet involving personal information.

Use of Cookies: A cookie is a small text file containing a unique identifier that is placed on a your computer's hard drive when you visit a Web site. We use session based and persistent first party cookies to improve your access and ease of use of our Web site. Cookies do not damage your system or files in any way.

Most browsers now recognize when a cookie is offered and permit users to control how and when they will be accepted. If you are not sure whether your browser has this capability, you should consult the documentation that accompanied your browser or check with your Internet Service Provider (ISP). If you choose to decline cookies, you may not be able to fully experience the interactive features of the NCDDR services and Web sites that you visit.

Linkage: Use of Internal links: Internal links will primarily be displayed within your browser's parent window. Occasionally a link may open a new window, with a link Title attribute warning.

Use of External links: The NCDDR links to many external Web sites. The NCDDR has no control over the linked sites' accessibility for people with disabilities; nor does it endorse, approve, certify, or control these external Web sites and their content, privacy, or other policies.

Inactive Links: At the time of posting, all links are active. If a link is inactive, this indicates that the NCDDR made attempts to find the new location, but to the best of our knowledge the document no longer exists on the World Wide Web.

Viewers and Plug-ins

These plug-ins and viewers allow users to view various types of files on These links are provided for the user's convenience. SEDL/NCDDR does not control or guarantee the accuracy, relevance, timeliness,or completeness of these outside links. Further, the inclusion of these links is not intended to reflect their importance, nor is it intended to endorse any views expressed, or products or services offered, on these outside sites, or the organizations sponsoring the sites.

RealPlayer allows users to view video and hear audio files on the Internet. Users can choose between the free player or an enhanced paid version.

Get Real Media Player

Microsoft Windows Media Player allows users to view video and hear audio files on the Internet.

Get Windows Media Player

Macromedia Flash Player allows users to view Flash content and media on the Internet.

Get Macromedia Flash Player

Microsoft Word is a word processing application. Viewers for Word documents are available from Microsoft. Viewers allow users who don't have Microsoft Word to view Word files.

Get Word Viewer

Microsoft Excel is a spreadsheet application. Viewers for Excel are available from Microsoft. Viewers allow users who don't have Microsoft Excel to view Excel files.

Get Excel Viewer

Microsoft PowerPoint is a presentation program. Viewers for PowerPoint are available from Microsoft. Viewers allow users who don't have Microsoft PowerPoint to view PowerPoint files.

Get PowerPoint Viewer

PDF (Portable Document Format) files are used to retain the formatting of original documents. To view these files, the user will need to download the free Adobe reader.

Get Adobe Acrobat Reader | Text Only Adobe Acrobat Reader download page

Note: If you are using a screen reader that is not compatible with Adobe Acrobat Reader, Adobe will convert PDFs into either HTML or ASCII text. This tool is available at To find out more about Adobe and accessibility, visit

ZIP files are compressed self-extracting files used to simplify the download process by wrapping any number of separate files into a single "wrapper" and compressing the original files by a significant amount. ZIP and UNZIP software is available from a variety of vendors.

Stuffit Expander from Smith Micro Software, Inc. is a freeware package. Winzip has a free evaluation copy that is good for 21 days. After that, you will be required to pay for the full version.

Changes to NCDDR's Privacy Policy: We may modify or amend this Policy from time to time. In an effort to keep you informed of changes to this Policy, we will indicate the most recent update at the top of this page. For substantial changes to this Policy, we will notify you by placing prominent notice on our homepage. Changes to this Policy will not affect our use of previously provided personal information.

About SEDL | Contact SEDL | SEDL store

NCDDR is funded by the
National Institute on Disability, Independent Living, and Rehabilitation Research (NIDILRR)
Project Number: H133A060028
U.S. Department of Education