Work Disability Functional Assessment Battery (WD-FAB) Research Study


The WD-FAB is an assessment tool by which respondents self-report information about eight domains of personal functioning. It was derived from the World Health Organization’s International Classification of Function, Disability and Health. The WD-FAB uses Item Response Theory (IRT) and Computer Adaptive Testing (CAT) to select the most relevant set of questions from an item bank containing over 300 questions.

The objective of this study is to administer the WD-FAB to a sample of working-age Social Security Disability Insurance (SSDI) program beneficiaries and Supplemental Security Income (SSI) program recipients and to collect the data from those administrations.

For more information, select WD-FAB Summary.

Participating in the WD-FAB Research Study? Review information for WD-FAB Research Study participants.


The first wave of data collection is scheduled to begin July 2022.