Archive of Data on Disability to Enable Policy and Research (ADDEP)

Disabilities are increasingly recognized as a part of the broad spectrum of diversity and the human experience. Disabilities have important medical, political, social, and economic implications for the global population. Therefore, interest and research on disability has grown in complexity and exposure.


The Archive of Data on Disability to Enable Policy and research (ADDEP) is a new ICPSR initiative to build a repository of quantitative and qualitative data on disability. The mission of ADDEP is to improve and enable further research on disability for researchers, policymakers, and practitioners by acquiring, enhancing, preserving, and sharing data. ADDEP data can be used to better understand and inform the implementation of the Americans with Disabilities Act and other disability policies with the goal of improving the lives and conditions of people with disabilities. In addition to providing quality data for research and analysis, ADDEP strives to offer user support and community outreach to enable data to be optimally used by the widest audience.

Primary Aims/Services

  1. Build disability data sharing capacity
  2. Disseminate disability data
  3. Provide technical assistance for data users
  4. Build a connection between research data, community outreach, and activism

Definition of Disability as Provided by Americans with Disabilities Act (ADA)

An individual with a disability is defined by the ADA as a person who has a physical or mental impairment that substantially limits one or more major life activities, a person who has a history or record of such an impairment, or a person who is perceived by others as having such an impairment. The ADA does not specifically name all of the impairments that are covered. For further information about the ADA definition of disability, please refer to

Disability Data @ ICPSR