Virtual reality simulators for dermatologic surgery: Measuring their validity as a teaching tool

Surgical simulation is increasingly being considered for training, testing, and possibly credentialing in medicine and surgery. At the University of W ashington we have been developing a virtual reality (VR) suturing simulator . In the course of development it must be realized that expensive new techn ologies should bear the burden of proof of their effectiveness and reliabil ity before they are put into training programs. The purpose of this article is to define the concept of surgical skill and to discuss how it can be me asured in the context of validating VR surgical simulators. Specific measur es of validity and reliability are reviewed and discussed.