Objective: To determine the factorial validity of the Internal and External Motivation to Respond without Prejudice toward People with Disabilities Scale (D-IMS/EMS). Design: A quantitative descriptive design using factor analysis. Participants: 233 rehabilitation counseling and rehabilitation services students. Results: Both exploratory and confirmatory factor analysis provided evidence for the 2-factor structure of the D-IMS/EMS. The internal motivation and external motivation factors were found to correlate with the Attitudes toward Disabled Persons-Form A and the Contact with Disabled Persons Scale in the predicted direction. Conclusions: The D-IMS/EMS appears to have sufficient reliability and validity; the 2-factor solution was found to be acceptable. Further research with other groups of participants is needed.