Outsole Frequency Study of Suspect Shoe Impressions Compared to a Student Population
Jamie Johnson is from Eden Prairie, Minnesota. She graduated from Baylor University in 2009 with a B.S. in forensic science and minors in chemistry and biology. She is a second-year graduate student in the Marshall University Forensic Science Program, completing emphases in crime scene investigation, computer forensics, and forensic chemistry.
The more frequent a shoe is in a given population means that there will be a larger suspect pool when making comparisons, as a greater number of shoes will share class characteristics. The purpose of this research was to determine the outsole frequency of suspect shoe impressions (from law enforcement agencies) compared to a student population (taken using the Identicator® LE-25 Inkless Foot/Shoe Print kit). The most frequent shoe among students was an Old Navy flip-flop, while the most frequent suspect shoe was a Nike Air Force 1. Based on this data, the frequency study should be done year-round. A general population frequency study should also be attempted to help link the two populations together.
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