Centro de Documentação da PJ
Analítico de Periódico
CD 324
Planning, design and logistics of a decision analysis study [Recurso eletrónico] : the FBI/Ames study involving forensic firearms examiners / Keith L. Monson, Erich D. Smith, Stanley J. Bajic
Forensic Science International: Synergy, Vol. 4 (2022), 14 p.
Ficheiro de 3,29 MB em formato PDF.
IDENTIFICAÇÃO DE ARMA DE FOGO, BALÍSTICA, ANÁLISE LABORATORIAL, ESTUDO DE CASOS
This paper describes design and logistical aspects of a decision analysis study to assess the performance of qualified firearms examiners working in accredited laboratories in the United States in terms of accuracy (error rate), repeatability, and reproducibility of decisions involving comparisons of fired bullets and cartridge cases. The purpose of the study was to validate current practice of the forensic discipline of firearms/toolmarks (F/T) examination. It elicited error rate data by counting the number of false positive and false negative conclusions. Preceded by the experimental design, decisions, and logistics described herein, testing was ultimately administered 173 qualified, practicing F/T examiners in public and private crime laboratories. The first round of testing evaluated accuracy, while two subsequent rounds evaluated repeatability and reproducibility of examiner conclusions. This project expands on previous studies by involving many F/T examiners in challenging comparisons and by executing the study in the recommended double-blind format.
