The proposed research on the SCIM III, the latest and most sensitive version of the SCIM, would test the hypothesis that the SCIM III is a valid, reliable, and sensitive measure of functional ability in persons with SCI. Twenty-two rehabilitation centers throughout the United States will enroll a maximum of 660 subjects. Functional ability will be measured with the SCIM III during the first week of admittance into inpatient acute rehabilitation and within one week of discharge from the same rehabilitation program. Statistical analyses will be used to test the validity, reliability, and sensitivity of the SCIM III. The results will demonstrate whether the SCIM III is a suitable outcome measure to assess SCI specific functional ability in future clinical trials.