Consecutive matching striations (CMS) is a mathematical model that can be used to describe the strength of the correspondence being observed between two striated toolmark patterns. CMS does represent the “quality and quantity” factors in the AFTE Theory of Identification whether numbers are applied or not with respect to a final opinion. This course will discuss the general concept of CMS and how it has been studied to determine a reliable and valid conservative numerical criterion that can be applied in casework.
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Ron Nichols

Ron is widely published with many publications routinely referenced in published court decisions with respect to Daubert and Frye evidentiary hearings. He is the author of Firearm and Toolmark Identification: The Scientific Reliability of the Forensic Science Discipline available through Academic Press and Building a Preventive Crime Gun Strategy available through Ultra Electronics Forensic Technology. He is a contributing author to other texts as well. He is internationally recognized as one of the leading experts in communicating the scientific foundations of the firearm and tool mark discipline to both technical and lay audiences providing training and consultation nationally and internationally, including on behalf of the United Nations.