10:45 a.m.–12:00 p.m.

Implications of Different Concepts for Survey Measurement Problems

Discussion Leader: Robert Groves

Contributors: Ellen MacKenzie and Allan Hunt

• How do the various conceptual models address the dynamic nature of disability and how do these models address SSA's disability program requirements?

• How do the various conceptual models address the role of environment, adaptation, expectations, and perceptions?

• What measurement gaps exist between the various conceptual models of disability and the current set of disability measures used in federal surveys?

1:00–2:00 p.m.

Sampling, Accessing, and Measuring People with Disabilities

Discussion Leader: Colm O'Muircheartaigh

Contributors: Lawrence Branch and Ronald Kessler

• To what extent do varying modes and methods of data collection facilitate participation among persons with disabilities?

• If access to a person with a work disability is limited (due to the interface between the survey design and the nature of the disability), how is the measurement of disability affected by the role of the proxy respondent—caregiver as respondent, other proxy respondent? Can tradeoffs be assessed between nonresponse and measurement errors?

• What gaps exist in our knowledge of the relative impact of coverage, nonresponse, and measurement error on estimates of disability?

2:00–3:00 p.m.

Questionnaire Development Issues for Measures of Work Disability

Discussion Leader: Seymour Sudman

Contributors: Roger Tourangeau and Jack McNeil

• In light of developments related to the integration of