![]() ![]() Although the results of this comparison are generally accepted in courts, it is ultimately a subjective process. Marks on cartridge cases that have been fired from a firearm are often manually compared by a trained forensic examiner. Thompson): 30ĢD and 3D Topography of Bullets and Casings The next phase of this project is currently underway.Ĭontact: robert.m.thompson (Robert M. From 2008 to 2009, examiners helped us develop a Traceability and Quality System with our standard bullets and casings as references. This project establishes traceability and quality assurance in crime laboratories throughout the country. We have partnered with the Bureau of Alcohol, Tobacco, Firearms, and Explosives to develop standards for ballistics identification in crime laboratories within the National Integrated Ballistics Information Network, which allows examiners to search digital images of markings on fired cartridge cases against a national database of images. These documents are currently published in draft form. This Working Group is developing many documents to assist forensic scientists and managers, such as writing guidelines for memoranda of understanding between agencies, writing guidelines for new AFIS requests for proposals, and a glossary of AFIS terms. ![]() To address these issues, we partnered with the National Institute of Justice to convene the Latent Print AFIS Interoperability Working Group in April 2008. In addition, before submitting a print for an AFIS search, examiners must manually encode the print's features in a way that the system can understand. However, examiners often lack the technological ability to access AFIS in neighboring jurisdictions. Latent Print AFIS Interoperability Working GroupĪutomated fingerprint identification systems (AFIS) allow latent print examiners to search fingerprint files and to transmit fingerprint images. Examples of testing images are available on the Latent Print Examiner Personnel Selection Test Examples page. This test is now available to forensic practitioners through Cognitive Profile Testing. To account for time needed to produce a response and the closeness of incorrect responses, the tests are scored on a sliding scale. These tests use partial features of abstract designs to determine an individual's ability to match the partial image to the correct larger image with varying levels of quality. To help in the selection of latent print examiners, we have supported the development of a simple test that quantifies the cognitive processes that underpin fingerprint examinations. ![]() Latent Print Examiner Personnel Selection Toolįorensic laboratory managers need to know whether the people they want to hire have the right aptitudes, experience, and skills to be able to handle their work assignments. This study, which uses the human factors and analysis classification system (HFACS) model, will contribute to developing system-based approaches for minimizing error in forensic settings. In order to get a better understanding of the human factors that can affect latent print examination, we have created an online tool for latent print managers and supervisors to document errors and to determine the factors that lead to the error, the Online Human Factors in Latent Print Examination Portal. It provides a comprehensive discussion of how human factors relate to all aspects of latent print examinations.Ĭontact: melissa.taylor (Melissa Taylor), 30 In February 2012, we published Latent Print Examination and Human Factors: Improving the Practice through a Systems Approach, which documents the Working Group's findings and recommendations, addressing issues such as the acquisition of impressions of friction ridge skin, courtroom testimony, laboratory design and equipment, and research into emerging methods for associating latent prints with exemplars. This Working Group assessed the effects of human factors on forensic latent print analysis and recommended ways to reduce the likelihood and consequences of human error at various stages in the interpretation of latent print evidence. In December 2008, we partnered with the National Institute of Justice to sponsor the Expert Working Group on Human Factors in Latent Print Analysis. These errors may be attributed to a variety of human factors that may affect the examiner, such as health problems, stress, inadequate training, or insufficient resources. It also includes pattern analysis, such as is used when evaluating handwriting, typewriting, and writing instruments.Įxpert Working Group on Human Factors in Latent Print AnalysisĪlthough courts have accepted latent fingerprint evidence for the past century, several high-profile cases have highlighted the fact that human errors can occur. Pattern and impression evidence includes any markings produced when one object comes into contact with another object, such as fingerprints, shoeprints, toolmarks, and tire treads.
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