In Injury Prevention, Catherine McDonald and colleagues, including Flaura Winston, evaluate the construct and criterion validity of the Simulated Driving Assessment (SDA). The SDA is a newly developed tool for novice teen drivers that incorporates 22 variations of the most common teen driver crashes. The authors compared the driving performance of inexperienced teens with experienced adult drivers. Their analysis shows a higher error score in teens than in adults, and that the error score derived from the SDA correlates with the score from a professional driving instructor. The study supports the use of the SDA as a protocol to evaluate teen driver performance and their readiness to drive.