National Older Driver Research and Training Center

Examining issues surrounding older driver assessment, remediation, rehabilitation, and the use of alternatives to the car.


Reliability and Validity of the Consensus Conference Assessment Protocol

Funding: Centers for Disease Control and Prevention
Principal Investigator: Wendy Stav

This project will determine the reliability and validity of the older driver assessment procedures, outlined at the 2003 International Older Driver Consensus Conference. The first stage of this project is to identify clinical assessments that predict on-the-road driving performance. The goal is to improve the efficiency and efficacy of the off-road component of driving evaluations by possibly reducing the number of assessment instruments used. These assessment instruments measure vision, visual perception, cognition, motor performance and reaction time. Areas of vision tested include static acuity, color perception, depth perception, extraocular control, visual scanning, visual closure, visual spatial organization, and contrast sensitivity. Cognitive assessments measure memory, divided attention, selective attention, attention shift, processing speed, and knowledge. Tests of physical performance include grip and gross muscle strength, coordination, range of motion, ambulation and functional mobility. All study participants complete: (1) a comprehensive telephone interview to obtain background driving and health-related information; (2) a clinical assessment battery; (3) a standardized road course.