Glass Evidence: Bayesian Approach to

When examining glass evidence, forensic scientists can be asked to reconstruct a course of events (modus operandi) or to associate broken glass found at a crime scene with material recovered from a victim or a suspect. We will show how glass evidence has been assessed and interpreted. First, we will discuss the preassessment of the case and the importance of establishing working propositions before looking at the physical evidence. Second, we will continue with the comparison of measurements (refractive index and elemental analysis) and the interpretation of the results. We will cover the likelihood ratio approach and others. Surveys on parameters such as transfer, persistence and glass recovered as background will be presented. We will conclude with a brief presentation of the software available. Keywords: glass; interpretation; likelihood ratio; statistics; Bayesian approach; transfer; presistence; background glass; software

[1]  T. J. Allen,et al.  The transfer of glass—part 2 , 1998 .

[2]  J. McQuillan,et al.  A survey of the distribution of glass on clothing , 1992 .

[3]  C. Aitken,et al.  Statistics and the Evaluation of Evidence for Forensic Scientists: Aitken/Statistics and the Evaluation of Evidence for Forensic Scientists , 2005 .

[4]  I. Evett,et al.  More on the hierarchy of propositions: exploring the distinction between explanations and propositions. , 2000, Science & justice : journal of the Forensic Science Society.

[5]  I. W. Evett,et al.  Original paperThe interpretation of refractive index measurements. III , 1982 .

[6]  R. J. Groves,et al.  The Frequency of Occurrence of Paint and Glass on the Clothing of High School Students , 1997 .

[7]  Ian W. Evett,et al.  The interpretation of glass evidence. A practical approach , 1990 .

[8]  John Buckleton,et al.  The grouping problem in forensic glass analysis: a divisive approach 1 This research was made possib , 1997 .

[9]  Tacha Hicks,et al.  Forensic Interpretation of Glass Evidence , 2000 .

[10]  C Roux,et al.  Glass particles in footwear of members of the public in south-eastern Australia--a survey. , 2001, Forensic science international.

[11]  George Gettinby,et al.  The retention of glass particles on woven fabrics , 1984 .

[12]  Qiang Shen,et al.  The evaluation of evidence for exponentially distributed data , 2007, Comput. Stat. Data Anal..

[13]  J. A. Lambert,et al.  A survey of glass fragments recovered from clothing of persons suspected of involvement in crime , 1985 .

[14]  D. F. Nelson,et al.  Backward Fragmentation from Breaking Glass , 1967 .

[15]  Ian W. Evett,et al.  A Bayesian Approach to the Problem of Interpreting Glass Evidence in Forensic Science Casework , 1986 .

[16]  Ian W. Evett,et al.  The interpretation of refractive index measurements V. , 1977 .

[17]  J A Lambert,et al.  A model for case assessment and interpretation. , 1998, Science & justice : journal of the Forensic Science Society.

[18]  J. A. Lambert,et al.  The transfer of glass—part 4 , 1998 .

[19]  Colin Aitken,et al.  Bayesian Networks and Probabilistic Inference in Forensic Science , 2006 .

[20]  T. J. Allen,et al.  The transfer of glass—part 3 , 1998 .

[21]  C M Triggs,et al.  Glass on clothing and shoes of members of the general population and people suspected of breaking crimes. , 2001, Science & justice : journal of the Forensic Science Society.

[22]  C. Aitken,et al.  A Two‐Level Model for Evidence Evaluation , 2007, Journal of forensic sciences.

[23]  K W Smalldon,et al.  The distribution of glass fragments in front of a broken window and the transfer of fragments to individuals standing nearby. , 1978, Journal - Forensic Science Society.

[24]  I. Evett,et al.  A hierarchy of propositions: deciding which level to address in casework , 1998 .

[25]  J M Curran,et al.  Assessing transfer probabilities in a Bayesian interpretation of forensic glass evidence. , 1998, Science & justice : journal of the Forensic Science Society.

[26]  David Lindley,et al.  A problem in forensic science , 1977 .

[27]  J. Locke,et al.  Breaking of flat glass — Part 1: Size and distribution of particles from plain glass windows , 1991 .

[28]  J M Curran,et al.  Spatial variation of refractive index in a pane of float glass. , 2003, Science & justice : journal of the Forensic Science Society.

[29]  J D DeHaan,et al.  A survey of men's footwear. , 1977, Journal - Forensic Science Society.

[30]  J. A. Lambert,et al.  A survey of glass fragments recovered from clothing of persons suspected of involvement in crime , 1995 .

[31]  John K. Scranage,et al.  Breaking of flat glass — Part 3: Surface particles from windows , 1992 .

[32]  John Buckleton,et al.  A practical example of the interpretation of glass evidence , 1996 .

[33]  Tacha Hicks,et al.  Transfer and persistence of glass fragments on garments , 1996 .

[34]  J. L. Buckle,et al.  A Study on the Backward Fragmentation of Window Glass and the Transfer of Glass Fragments to Individual's Clothing , 1991 .

[35]  J. Locke,et al.  Breaking of flat glass—part 2: Effect of pane parameters on particle distribution , 1992 .

[36]  John K. Scranage,et al.  The transfer of glass—part 1 , 1998 .

[37]  James M. Curran,et al.  The Statistical Interpretation of Forensic Glass Evidence , 2003 .