Forensic Analysis

Weighing Bullet Lead Evidence

Status: Available Now

Size: 228 pages, 6 x 9

Publication Year:2004

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PAPERBACK ISBN-10: 0-309-09079-2 ISBN-13: 978-0-309-09079-7	$47.00	Add to Cart

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Authors:
Committee on Scientific Assessment of Bullet Lead Elemental Composition Comparison, National Research Council
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Since the 1960s, FBI testimony in thousands of criminal cases has relied on evidence from Compositional Analysis of Bullet Lead (CABL), a forensic technique that compares the elemental composition of bullets found at a crime scene to the elemental composition ...
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Table of Contents
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Front Matter	i-xii
Executive Summary	1-7	(skim)
1. Introduction	8-11	(skim)
2. Compositional Analysis	12-25	(skim)
3. Statistical Analysis of Bullet Lead Data	26-70	(skim)
4. Interpretation	71-108	(skim)
5. Major Findings and Recommendations	109-114	(skim)
Appendix A: Statement of Task	115-117	(skim)
Appendix B: Committee Membership	118-123	(skim)
Appendix C: Committee Meeting Agendas	124-129	(skim)
Appendix D: Glossary	130-132	(skim)
Appendix E: Basic Principles of Statistics	133-141	(skim)
Appendix F: Simulating False Match Probabilities Based on Normal Theory	142-150	(skim)
Appendix G: Data Analysis of Table 1, Randich et al.	151-156	(skim)
Appendix H: Principal Components Analysis: How Many Elements Should Be Measured?	157-162	(skim)
Appendix I: The Birthday Problem Analogy	163-164	(skim)
Appendix J: Understanding the Significance of the Results of Trace Elemental Analysis of Bullet Lead	165-168	(skim)
Appendix K: Statistical Analysis of Bullet Lead Data by Karen Kafadar and Clifford Spiegelman	169-214	(skim)

Description

Since the 1960s, FBI testimony in thousands of criminal cases has relied on evidence from Compositional Analysis of Bullet Lead (CABL), a forensic technique that compares the elemental composition of bullets found at a crime scene to the elemental composition of bullets found in a suspect's possession. The report assesses the scientific validity of CABL, finding that the FBI should use a different statistical analysis for the technique, and that, given variations in bullets manufacturing processes, expert witnesses should make clear the very limited conclusions that CABL results can support.

Forensic Analysis

Weighing Bullet Lead Evidence

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