Research Article Analysis1.docx

Research Article Analysis1.docx - RESEARCH ARTICLE ANALYSIS...

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Chaka Theus CJA 334 August 15, 2016 RESEARCH ARTICLE ANALYSIS
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Identify the purpose of the research study, problem, and questions. The Science Behind Firearm and Tool Mark Examination by Ronald Nichols[nAN14], is a peer reviewed research study written to address two clear cut questions; Will Trained firearm and tool mark examiners looking at bullets fired over successively fabricated firearm barrels that contain the same barcode like arrangement be able to correctly identify the firearm that fired the bullet and does an examiners level of experience effect the accuracy of their identifications. Describe the design of the study. The study used an open set layout where the investigators were conferred with a immense amount of missile and firearms without having set the expectation that all missile will match a firearm. This allowed the investigators more area for misdeed in their findings but also ensured that the investigators were examining each specimen on its own without the pressure of having to identify a firearm for every missile. Identify an operational definition used by the researchers. An operational definition in this research study was that investigators of all levels of experience were given the same spent bullets and casings and were expected to regulate equitable based on striations and reactions which firearm of the ten successively fabricated firearms, if any, the missile paired to. Aside giving two more experienced investigators the same data as the less experienced it gave more accurate results as to if all the investigators would have the same findings disregarding of experience, if the more experienced
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investigators would be able to analyze more meticulously the difference in striations between
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