Criteria for assessing the tools of disability outcomes research

To recommend instrument assessment criteria, deriving from psychometric tex tbooks and articles and disability and research experts, for reviewing and assessing surveys and questionnaires for disability outcomes research. Trad itional criteria are recommended, including psychometric properties of vali dity, reliability, and sensitivity to change, as are newer statistical meth ods for assessing scaling properties, such as Rasch analysis. Special consi deration is needed for generic instruments that may be poorly scaled for di sability research. Pragmatic aspects of data collection, including acceptab ility and disability accommodation, also are recommended.