 This study investigates the diagnostic accuracy of medical students using a clinical diagnostic support system, CDSS, Google, and neither, control. The results show that the CDSS and Google groups had higher diagnostic accuracy than the control group. Additionally, the CDSS and Google groups had similar levels of diagnostic accuracy when it came to common diseases. This article was authored by Yazotaka Yanajita, Kiyoshi Shikino, Kaise Kishizika, and others.