Estimating the Skull‐to‐Camera Distance from Facial Photographs for Craniofacial Superimposition

The overlay of a skull and a face image for identification purposes requires similar subject‐to‐camera distances (SCD) to be used at both photographic sessions so that differences in perspective do not compromise the anatomical comparisons. As the facial photograph is the reference standard, it is crucial to determine its SCD first and apply this value to photography of the skull. So far, such a method for estimating the SCD has been elusive (some say impossible), compromising the technical validity of the superimposition procedure. This paper tests the feasibility of using the palpebral fissure length and a well‐established photographic algorithm to accurately estimate the SCD from the facial photograph. Recordings at known SCD across a 1–10 m range (repeated under two test conditions) demonstrate that the newly formulated method works: a mean SCD estimation error of 7% that translates into <1% perspective distortion error between estimated and actual conditions.     

Examination of an interventionist-led HIV intervention among criminal justice-involved female prisoners

The purpose of this study was to examine the implementation, adherence and protocol fidelity for the Reducing Risky Relationships for HIV (RRR-HIV) study. The RRR-HIV study is a phase III trial of a randomized intervention to reduce human immunodeficiency virus (HIV) risk behaviors among incarcerated women in four US states: Connecticut, Delaware, Kentucky and Rhode Island. The intervention consists of five interventionist-led prison-based group sessions and a sixth individual community-based session. Data on adherence, implementation, acceptability and fidelity of the intervention were obtained from forms completed after the five prison-based sessions by both the interventionist and participant. Data from the sixth session were collected by the interventionist. Of the 363 women recruited to date, 173 (47.6%) have been randomly allocated to the experimental RRR intervention, of which implementation measures were available for 162 (93.6%). Almost three-quarters of women attended all five sessions, each of which lasted a median of 90 minutes, indicating successful implementation of the protocol across multiple study sites. Interventionists and participants alike reported that all of the topics for each session were discussed, suggesting adherence to the protocol. In addition, protocol interventionists indicated that more than 95% of the women were engaged/involved, interested, and understood the materials presented, indicating high levels of acceptability among the participants and fidelity to the intervention protocols. The majority of participants also answered all of the post-test questions correctly, which is another strong indicator of the fidelity to the intervention. Results suggest that the RRR-HIV study has been successfully implemented across multiple study sites. Adherence to the protocol, as well as protocol fidelity and acceptability, were also strong, which is essential to establish prior to examining outcome data.     

Upper‐Bounding the Incidence Rate of Associations Between Camouflage Uniforms and Surveillance Images*

Abstract: Camouflage garments can be associated with surveillance images of a crime scene even in the absence of unique wear marks or very high‐quality images. However, the probability of an accidental association, or incidence rate, is significant. The present work describes and validates a method for estimating the incidence rate based on a statistical model of the garment manufacturing process. The model was developed primarily for use with the current U.S. Army Combat Uniform (ACU), but can be applied to any camouflage garment. Eight garment manufacturers were studied, and all sources of variation in the manufacturing process were characterized. The marking and spreading procedures were found to be dominant and consistent sources of variation. However, some sources of variation, in particular those because of human operators, were not consistent enough to accurately characterize. Sources of variation that could not be well‐characterized were ignored in the statistical model, yielding a worst‐case estimate that is an upper‐bound to the true incidence rate. The model was evaluated for a variety of cases. Depending on the quality of the surveillance image, the manufacturing parameters, and the local population, incidence rates range from about 3% to negligibly small. The model was validated by returning to one manufacturer, and sampling a large number of completed garments and estimating empirical match probabilities. The empirical probabilities validated the estimates of the worst‐case incidence rate and also demonstrated that typical incidence rates are significantly lower.     

Accountability and psychiatric disorders: How do forensic psychiatric professionals think?

Swedish penal law does not exculpate on the grounds of diminished accountability; persons judged to suffer from severe mental disorder are sentenced to forensic psychiatric care instead of prison. Re-introduction of accountability as a condition for legal responsibility has been advocated, not least by forensic psychiatric professionals. To investigate how professionals in forensic psychiatry would assess degree of accountability based on psychiatric diagnoses and case vignettes, 30 psychiatrists, 30 psychologists, 45 nurses, and 45 ward attendants from five forensic psychiatric clinics were interviewed. They were asked (i) to judge to which degree (on a dimensional scale from 1 to 5) each of 12 psychiatric diagnoses might affect accountability, (ii) to assess accountability from five case vignettes, and (iii) to list further factors they regarded as relevant for their assessment of accountability. All informants accepted to provide a dimensional assessment of accountability on this basis and consistently found most types of mental disorders to reduce accountability, especially psychotic disorders and dementia. Other factors thought to be relevant were substance abuse, social network, personality traits, social stress, and level of education.     

Drug use and criminal activity among rural probationers with DUI histories

The present study examined whether ever being arrested for driving under the influence (DUI) was associated with higher levels of substance use and criminal activity in a sample of 800 probationers. Lifetime and 30-day histories of substance use and criminal activity were compared across three groups of probationers from rural Kentucky: those with a single DUI arrest, those with two or more DUI arrests, and those with no DUI arrests. A larger percentage of probationers with a DUI arrest reported lifetime and 30-day substance use than non-DUI offenders in almost all drug and alcohol categories. Higher prevalence of criminal activity was limited primarily to the multiple DUI arrest group. Findings add to the literature on rural substance abusers and indicate that DUI may be used as a marker to help identify opportunities for targeted substance abuse interventions.     

Regulated and unregulated insider trading around earnings announcements

This paper analyses insider trading behaviour around annual and interim earnings announcements during changing legislative environments in Sweden from 1980 to 2003. Using a unique data set, we are able to explore the nature of insider trading patterns from unregulated to strongly regulated insider trading markets. We find limited evidence of opportunistic insider trading. Insiders seem to be reluctant to sell stocks before positive earnings announcements. They also tend to time their trades in conjunction with an immediate post-announcement period, i.e. “safety trading”, which becomes more evident within stronger legislation environments. Some support for contrarian trading behaviour is also found.