Forensic Analysis of Human Autopsy Tissue for the Presence of Polydimethylsiloxane (Silicone) and Volatile Cyclic Siloxanes using Macro FT‐IR,FT‐IR Spectroscopic Imaging and Headspace GC‐MS

This study describes effective and straightforward primary and secondary methods for the detection of silicone in human autopsy tissue. The primary method is polydimethylsiloxane (PDMS) specific and employs either macro‐attenuated total reflection Fourier transform infrared (ATR‐FT‐IR) spectroscopy for samples with a high PDMS concentration (relative to that of the matrix) or micro‐FT‐IR spectroscopic imaging in a reflection/absorption modality for samples with a low PDMS concentration. Although the secondary method is not PDMS specific, it employs headspace gas chromatography with mass spectrometric detection (HS/GC‐MS) for the detection of low molecular weight volatile cyclic siloxanes (VCS), which are characteristic marker compounds for PDMS. Overall, the combined results from the primary and secondary analyses provide reliable evidence for the presence of silicone.     

Dimensional Review of Scales for Forensic Photography

Scales for photography provide a geometrical reference in the photographic documentation of a crime scene, pattern, or item of evidence. The ABFO No. 2 Standard Reference Scale (1) is used by the forensic science community as an accurate reference scale. We investigated the overall accuracy of the major centimeter graduations, internal/external diameters of the circles, error in placement of the circle centers, and leg perpendicularity. Four vendors were selected for the scales, and the features were measured on a vision‐based coordinate measurement system. The scales were well within the specified tolerance for the length graduations. After 4 years, the same scales were measured to determine what change could be measured. The scales demonstrated acceptable stability in the scale length and center‐to‐center measurements; however, the perpendicularity exhibited change. The study results indicate that scale quality checks using certified metal rulers are good practice.     

Posttraumatic Stress Disorder Symptoms,Traumatic Reminders,and Partner Aggressive Tendencies Among Veterans

This study examined whether laboratory exposure to traumatic reminders potentiated the relationship between veterans’ posttraumatic stress disorder (PTSD) symptoms and intimate partner aggression (IPA) articulations elicited during an anger-induction task. The sample included 82 male Operation Iraqi Freedom/Operation Enduring Freedom veterans. The Articulated Thoughts in Simulated Situations (ATSS) procedure was used to assess physical IPA articulations (i.e., expressions of physically aggressive intentions toward the partner) and verbal IPA articulations (i.e., statements intended to insult or demean the partner) made during “relationship anger” provoking scenarios. Participants were administered versions of the ATSS both with and without trauma cue presentation. Results indicated that trauma cue exposure potentiated the relationship between veterans’ PTSD symptoms and physical IPA articulations, but did not strengthen the significant relationship between PTSD symptoms and verbal IPA articulations. Findings contribute to the literature on veterans’ PTSD symptoms and IPA perpetration by highlighting the influence of traumatic reminders.     

Book reviews

How Nuclear Weapons Spread By F. Barnaby. Routledge, London, 1993, Hbk. £30.00.

Germany and the Approach of War in 1914 By V.R. Berghahn. Macmillan, London, second edition 1993 (first edition 1973), Hbk. £35.00, Pbk £10.99.

The Age of Migration’, International Population Movements in the Modern World By Stephan Castles and Mark Miller. Macmillan, Basingstoke, 1993, Hbk. £35.00, Pbk. £10.99.

Ideas and Foreign Policy, Beliefs, Institutions and Political Change Edited By Judith Goldstein and Robert O. Keohane. Cornell University Press, Ithaca, 1993, Hbk. S41.25, Pbk. S16.45.

European Monetary Union: Lessons from the Classical Gold Standard By Milivoje Panic. St. Martin's Press, New York, 1993.

In Defense of Naval Supremacy: Finance, Technology and British Naval Policy, 1889–1914 By Jon Tetsuro Sumida. Routledge, London, 1993, Pbk. £12.99.     

Plainly Wrong

English law and wider common law jurisprudence have endorsed the condition that an appellate court should reject a trial judge's finding of fact which it believes is ‘plainly wrong’. Courts have not explained what makes a finding plainly wrong, however. Scholars have largely ignored the issue. This article draws on recent work in epistemology to provide a new analysis of the plainly wrong standard. Rationally, a court should not believe both (1) that a judge is a better fact finder and (2) that the judge was wrong to find some fact. If it does believe both, it should abandon the belief it is less confident of. So, a court should reject a judge's finding if it is more confident that it is wrong than that the judge is a better fact finder. This analysis has implications for review of administrative fact finding and for judicial deference generally.     

The Community Policing Evaluation Survey: Reliability, validity, and structure

This paper describes the reliability, validity, and structure of a scale designed to evaluate community-policing programs. The Community Policing Evaluation Survey (CPES) is designed in such a way that local police agencies can implement it without the assistance of professional researchers. The scale consists of four subscales which measure (1) Quality of Contact with Police, (2) Perceptions of Crime and Disorder, (3) Personal Fear, and (4) Community Cohesion.     

Detection and quantification of low levels of benzoylecgonine in equine urine

Cocaine (COC) is a highly addictive plant alkaloid expressing strong psychostimulatory effect. It has no medical use in equine veterinary practice. The contamination of the environment with cocaine such as its presence on the US paper currency has been reported few times. There are anecdotal reports of low benzoylecgonine (BE) concentrations (usually much less than 100 ng/mL) being found in urine of race horses. In order to protect horsemen against harsh penalties associated with the presence of trace amounts of BE in horse urine as a result of environmental contamination, in February 2005 the Illinois Racing Board issued new medication rules that established the threshold level of 150 ng/mL for BE in equine urine. The penalties associated with this rule provide for increasing fines ($250, $500, $1000) with successive positive reports against a trainer for levels of BE below 150 ng/mL. A total of 19,315 urine samples were collected over the 2-year period of time from winning horses (both harness and thoroughbred) at race tracks in Illinois for routine drug screening (ELISA). The presence of BE was confirmed by GC/MS in 28 urine samples (0.14%). The concentration range for BE in harness horses (21 detections) was < 5-91 ng/mL, and for thoroughbred (seven detections) was 7-52 ng/mL. To date, the laboratory has not reported concentrations of BE that exceed the established threshold concentration of 150 ng/mL.     

Accuracy Rates of Ancestry Estimation by Forensic Anthropologists Using Identified Forensic Cases

A common task in forensic anthropology involves the estimation of the ancestry of a decedent by comparing their skeletal morphology and measurements to skeletons of individuals from known geographic groups. However, the accuracy rates of ancestry estimation methods in actual forensic casework have rarely been studied. This article uses 99 forensic cases with identified skeletal remains to develop accuracy rates for ancestry estimations conducted by forensic anthropologists. The overall rate of correct ancestry estimation from these cases is 90.9%, which is comparable to most research‐derived rates and those reported by individual practitioners. Statistical tests showed no significant difference in accuracy rates depending on examiner education level or on the estimated or identified ancestry. More recent cases showed a significantly higher accuracy rate. The incorporation of metric analyses into the ancestry estimate in these cases led to a higher accuracy rate.