Dr. Romero utilizes modern test theory methodologies to develop, evaluate, and improve clinical/research outcome measures and patient reported outcome measures. He is particularly interested in rehabilitation outcome measures to evaluate patients with mobility deficits leading to falls. Dr. Romero utilizes Item Response Theory to evaluate existing instruments and develop new outcome measures that are most sensitive, precise and efficient. A second line of research is the study of distance approaches to deliver rehabilitation services. Dr. Romero investigates the use of computer and video-conferencing technology to connect patients with healthcare providers.