Suspect Height Estimation Using the Faro Focus3D Laser Scanner

At present, very little research has been devoted to investigating the ability of laser scanning technology to accurately measure height from surveillance video. The goal of this study was to test the accuracy of one particular laser scanner to estimate suspect height from video footage. The known heights of 10 individuals were measured using an anthropometer. The individuals were then recorded on video walking along a predetermined path in a simulated crime scene environment both with and without headwear. The difference between the known heights and the estimated heights obtained from the laser scanner software were compared using a one-way t-test. The height estimates obtained from the software were not significantly different from the known heights whether individuals were wearing headwear (p = 0.186) or not (p = 0.707). Thus, laser scanning is one technique that could potentially be used by investigators to determine suspect height from video footage.     

Identification of Bodies by Unique Serial Numbers on Implanted Medical Devices

Visual identification is the most common identification method used by medical examiners but is not always possible. Alternative methods include X‐ray, fingerprint, or DNA comparison, but these methods require additional resources. Comparison of serial numbers on implanted medical devices is a rapid and definitive method of identification. To assess the practicality of using this method, we reviewed 608 consecutive forensic autopsies performed at a regional medical examiner office. Of these, 56 cases required an alternative method of identification due to decomposition (n = 35), gunshot wound (n = 9), blunt trauma (n = 6), or charring (n = 6). Of these 56 cases, eight (14.3%) were known to have an implanted medical device. Of these eight cases, five (63%) could be positively identified by comparing serial numbers. If an implanted medical device is known to be present, and medical records are available, identification by medical device serial number should be a first‐line method.     

Proposed Method for Predicting Pair Matching of Skeletal Elements Allows Too Many False Rejections

Byrd proposes a method for predicting pair matches in commingled remains to reduce visual comparison. The method compares differences between left and right postcranial element measurements in commingled samples with differences in known pairs from a reference sample using a t‐score approach. We duplicated his protocol using six elements from two samples of known paired elements (n = 854 to 1063) and calculated the number of pairs correctly predicted. Time commitment was estimated by mathematically attempting matches with all left and right elements in these samples. Although the results show an 86% reduction in the number of potential pairs requiring visual matching, we do not recommend the method because (i) the normality assumption for use of a t‐score approach is violated, (ii) no account is made for bilateral asymmetry, and (iii) the high rate of false rejections (up to 22%) undermines its ability to show true incompatibilities for potential pair matches.     

The implementation of case formulation by probation officers: service user and carer views

Background: The recent UK Government strategy on high-risk offenders with personality disorders (PD) proposes improved identification of this group, assessment of their treatment needs through case formulation (CF) and the subsequent provision of treatment pathways. Little is known about service user and carer views on this strategy. Aims/Hypotheses: This study sought to identify the views of personality-disordered (PD) offenders and carers on the proposed role of Probation staff in CF. Methods: Three focus groups were carried out, two with service users and one with carers, with a total of 10 participants overall. Results: Five themes emerged: ‘power’, ‘conflicting roles’, ‘trust’, ‘building a relationship through consistency of care’ and ‘hope and possibility’. Conclusions/Practical implications: Offenders and carers were sceptical regarding the proposed role of Offender Manager (OMs) in CF and this could pose a potential barrier to the successful implementation of the strategy.     

An Evaluation of Differentially Spliced Genes as Markers of Sex for Forensic Entomology,,

Blow flies (Calliphoridae) are important medically and economically and are commonly used in forensics as temporal markers in death investigations. While phenotypic traits in adult flies can be sexually dimorphic, sex identification in immatures is difficult. Consequently, little is known about how sex may result in developmental disparities among sexes even though there are indications that they may be important in some instances. Since genetic mechanisms for sex are well studied in model flies and species of agricultural and medical importance, we exploit the sex-specifically spliced genes transformer (tra) and doublesex (dsx) in the sex determination pathway to optimize a sex identification assay for immatures. Using known primer sets for tra and with a novel one for dsx, we develop PCR assays for identifying sex in four forensically relevant Calliphoridae species: Lucilia sericata (Meigen), Lucilia cuprina (Wiedemann), Cochliomyia macellaria (Fabricius), and Chrysomya rufifacies (Macquart) and evaluated their performance. Band detection rates were found to range from 71 to 100%, call rates ranged from 90 to 100%, and no error was found when bands could be called. Such information is informative for purposes of testimony and in preparation for development studies. The developed assays will assist in further differentiating sexually dimorphic differences in development of the Calliphoridae and aid in more accurately estimating insect age when age predictive markers (size, development time, molecular expression) are sexually dimorphic.     

Citrate Content of Bone for Time Since Death Estimation: Results from Burials with Different Physical Characteristics and Known PMI

A recently introduced method to determine the postmortem interval (PMI) based on quantification of the citrate content in bone was applied on the temporal bones and femora of 20 individuals buried in wooden coffins (WO) and body bags (BB), respectively. Concerning known vs. calculated PMI, a significant difference between the temporal and the femur bone samples of the same individuals was observed in the BB group (p = 0.012). In contrast, differences were insignificant for the WO group (p = 0.400). Moreover, similar levels of underestimation of PMIs resulted from the analysis of the femora for both burial groups (p = 0.247). Also, there was consistently less citrate preserved in the flat temporal bones as compared to the femora, indicating that the cortical layer of the long bones should be preferentially employed for citrate‐based PMI estimations. The results call for additional research on subsurface‐buried and surface‐deposited remains to enhance the accuracy of the published PMI equation.     

Age Estimation Based on Pulp Cavity to Tooth Volume Ratio Using Postmortem Computed Tomography Images

Pulp cavity size is known to decrease with age and can therefore serve as an indicator for age estimation. Here, we evaluated whether reconstructed images of multidetector‐row computed tomography (MDCT) acquired before forensic autopsy are useful for estimating age at death. Images of 136 mandibular first premolars obtained from bodies of known age at death were analyzed, and the volume of the regions corresponding to pulp cavity and that of the whole tooth were determined using a voxel counting function. The pulp cavity was clearly distinguishable from dental hard tissue on the reconstructed images when using a cutoff value of 1400 Hounsfield units. Regression analysis adjusted for sex showed that estimated age correlated significantly with the pulp cavity to tooth volume ratio (r = 0.76). MDCT is gaining more widespread use in forensic medicine, and analyzing dental images to obtain parameters for age prediction is a practical approach for postmortem identification.     

The Effects of Racemization Rate for Age Estimation of Pink Teeth

Pink teeth is thought to result from the seepage of hemoglobin caused by dental pulp decomposition. We investigated whether racemization can be applied for age estimation in cases of pink teeth where the whole tooth is used. The pink teeth used were three cases and the normal teeth for control were five mandibular canines of known age. Age of the pink teeth was calculated on the basis of regression formula obtained from the five control teeth. Only a slight error was noted between the actual and estimated ages of the pink teeth (R² = 0.980, r = 0.990): Cases 1–3 actually aged 23, 53, and 59 years were estimated to be 26, 52, and 60 years. Based on our results of testing pink teeth of known age, we suggest that racemization techniques allow for the age estimation of pink teeth using the same methods for normally colored teeth.     

Methods of sex trafficking: findings of a case study in Turkey

The underground sex industry in Turkey has increasingly become dependent on the foreign women, predominantly coming from the former Soviet Union. Some of these women became victims of sex trafficking. However, little is known about how they are recruited, transferred to, and exploited in Turkey. This article attempts to enlighten this process and makes use of police-recorded victim interviews (N?=?430), as well as key personnel interviews (N=?18) as primary data. Various methods and tactics are found to be used in sex trafficking operations in Turkey. Most victims are recruited by persons known to them proposing attractive job possibilities, especially in the entertainment business. The majority of victims enter Turkey with legal documents and with various transportation means. Traffickers obtain girls and sell them to customers in public and private settings using methods to control the victims, such as debt bondage, violence, confinement, confiscation of travel documents, and threats.     

The Effect of Flunitrazepam (Rohypnol®) on the Development of Chrysomya megacephala (Fabricius, 1794) (Diptera: Calliphoridae) and its Implications for Forensic Entomology

This study investigated the potential effects of flunitrazepam (known as “date rape drug”) on the developmental cycle of Chrysomya megacephala, an important forensic species, and their possible implications for the calculation of the PMI. A 1050 C. megacephala eggs were divided into five groups with seven replications each. The eggs were placed on artificial diet prepared with four drug concentrations of flunitrazepam (4, 8, 16, and 32 ng/g), besides the control group (prepared with water). Were evaluated the potential effects on development time, weight gain, and mortality during the cycles. The drug had no significant effect on development time or mortality although it did affect the weight of the pupae and adults (Kruskal–Wallis, p < 0.05). The result can be deduced that the determination of the postmortem interval is not affected.     

Brief mental health screening of prison entrants: psychiatric history versus symptom screening for the prediction of in-prison outcomes

While prisoners are known to suffer very high rates of mental illness, evidence is often lacking to inform the development of effective approaches to prison mental health service provision, including the approach to mental health screening. In addition, research to date has been dominated by prevalence studies and little is known about the mental health needs of prisoners over time. A random sample of prison entrants was recruited from a large remand and reception prison in New South Wales, Australia (n = 707) for the completion of a brief health survey. A second survey was completed during the subsequent six months (n = 317) in order to examine the effect of timing of assessment on mental health status. Those followed up within three months (n = 182) were further included in an analysis of predictive validity comparing the performance at baseline of self-reported history of previous diagnosis versus current symptom screening for psychological distress, in predicting subsequent mental illness. When assessed over six months from prison entry, mental health status was found to vary by timing of assessment. At prison entry, self-reported history of previous diagnosis of a mental health disorder was found to be a better predictor of mental illness over three months than screening for psychological distress.     

TRAINING,SKILLS, AND PRACTICES OF PARENTING COORDINATORS: FLORIDA STATEWIDE STUDY

This report details findings from the nation's first statewide study on parenting coordination. A survey was presented to all known practicing parenting coordinators (PCs) in Florida (N = 207), with 67 (32%) responding. Data concerning PC demographics, how PCs do their work, and how they perceive their clients at different stages of the parenting coordination process suggest substantial similarity between mental health and family law professionals in almost every realm of questioning. Study limitations, implications for further research, and practice considerations are discussed.     

Comparing Outcomes for Diverted and Nondiverted Jail Detainees with Mental Illnesses

Jail diversion programs have been proposed for use with persons with mental illnesses. While much support exists for these programs in theory, little is known about their characteristics, the individuals they divert, or their effectiveness. The current study focuses on identifying the characteristics of persons diverted through a court-based program in one midwestern city and their outcomes during the first 2 months after diversion. Information on participants (n = 80) was gathered through detainee interviews, staff interviews, and record abstracts. Two factors appear to be important in diversion: (1) community risk and (2) availability of specialized programs for diverted offenders. Demographic, clinical, and social context variables appear to influence diversion decisions. Overall, the diverted and nondiverted groups did approximately the same upon release, but one third of the nondiverted group never got released during the follow-up.     

A MCMC method for resolving two person mixtures

In this paper a Monte Carlo Markov Chain (MCMC) method for resolving DNA mixtures containing at most four peaks per locus into a major and a minor contributor is presented. Unlike previous methods, this method can provide posterior probability assessments of the most probable genotype and a likely range for the mixing proportion. The proposed method is applied to two DNA mixtures where the true genotypes of the contributors are known. The method provides posterior probabilities of the genotypes of the contributes which concord strongly with the known facts.     

Decomposition and Arthropod Succession in Whitehorse,Yukon Territory,Canada

Forensic arthropod succession patterns are known to vary between regions. However, the northern habitats of the globe have been largely left unstudied. Three pig carcasses were studied outdoors in Whitehorse, Yukon Territory. Adult and immature insects were collected for identification and comparison. The dominant Diptera and Coleoptera species at all carcasses were Protophormia terraneovae (R‐D) (Fam: Calliphoridae) and Thanatophilus lapponicus (Herbst) (Fam: Silphidae), respectively. Rate of decomposition, patterns of Diptera and Coleoptera succession, and species dominance were shown to differ from previous studies in temperate regions, particularly as P. terraenovae showed complete dominance among blowfly species. Rate of decomposition through the first four stages was generally slow, and the last stage of decomposition was not observed at any carcass due to time constraints. It is concluded that biogeoclimatic range has a significant effect on insect presence and rate of decomposition, making it an important factor to consider when calculating a postmortem interval.     

‘Their life in your hands’: the experiences of prison-based psychologists conducting risk assessments with indeterminate sentenced prisoners in the United Kingdom

ABSTRACT

Assessing prisoners’ risk of recidivism and making risk-management recommendations is central to the work of prison-based psychologists. Risk assessment is particularly crucial when it involves indeterminate sentenced prisoners: psychologists’ recommendations have potentially significant consequences both for prisoners and the public. However, little is known about psychologists’ experiences of conducting such high stakes risk assessments. This paper reports the results of an exploration of psychologists’ experiences, via interviews and discussions with qualified, prison-based psychologists. Analysis using Grounded Theory methods identified one super-ordinate category of meaning, namely The Challenging Context of Risk Assessment, which comprised two sub-categories: (1) pressure of limited resources and (2) pressure of the environment. An additional major category, Risk Assessment as a Weighty Task, comprised three sub-categories: psychologists described (1) a weight of responsibility relating to the magnitude and range of their responsibilities; (2) a weight of expectation from colleagues to provide solutions, and (3) the trainee dilemma associated with the need to balance development of trainee psychologists’ competence in risk assessment with being held accountable for their work. Understanding qualified psychologists’ experiences of undertaking risk assessments with indeterminate sentenced prisoners can facilitate improvements and build on areas of existing good practice.     

An Examination of the Transition of Fracture Characteristics in Long Bones from Fresh to Dry in Central Florida: Evaluating the Timing of Injury

It is important to conduct timing of injury research analyzing fracture characteristics at known postmortem intervals (PMI) because bone can retain fresh characteristics throughout the PMI. Defleshed pig (Sus scrofa) long bones were fractured weekly in two environments (full sun and shade) over 14 weeks in Central Florida and fracture characteristics were categorized (N = 136) for analysis. Results of analysis of variance (ANOVA) using time in weeks (PMI) as a dependent variable indicate significant relationships between PMI and Fracture Angle (p < 0.001), Fracture Surface (p < 0.001), and Fracture Outline (p < 0.001). Fracture characteristics associated with perimortem trauma (smooth Fracture Surfaces and curved or V‐shaped Fracture Outlines) were commonly observed. Analysis of fracture characteristics for each environment demonstrated similar patterns. Overall, the loss of only fresh fracture characteristics for each bone was noted earlier in the PMI for the Central Florida region than previously reported.     

The development and pilot testing of a family treatment court best practices assessment: The model standards implementation scale

In 2019, the family treatment court (FTC) best practice standards (the Standards) were published to clarify attributes of FTC programs associated with superior child, parent, and family outcomes. The Standards cover the breadth of FTC operations including program structure and leadership, substance use treatment and complementary services, and behavioral responses to participants. This study aimed to develop an instrument (the Model Standards Implementation Scale; “MSIS”) that stakeholders can use to assess implementation of the Standards by individual FTCs. The MSIS balances usability with scientific validity. Interrater reliability (IRR), internal consistency, and several types of validity were assessed. Results indicated moderate to strong IRR, high internal consistency, mixed known groups validity depending on Standard, and high convergent and divergent validity. Initial findings suggest good validity and usability of the MSIS for evaluating FTC Standards' implementation. Notably, the process of using the tool functioned to educate FTC team members on the Standards. Although implementation of the MSIS is a resource-intensive process, the opportunity to receive constructive feedback proved to be an effective incentive for initial and subsequent participation in the evaluation among FTCs. Future research is needed to examine predictive validity, including association between Standards' implementation and family outcomes in FTCs.     

Temporal transaction patterns in an open-air cannabis market

This article describes the results of a nine-month covert surveillance operation of Scandinavia’s principal open-air cannabis market, an area known as Christiania in Copenhagen Denmark. The data detail the time of day of retail transactions from four different sale positions, both outdoor (daytime: n = 1.123, nighttime: n = 1.282) and indoor (n = 63,413). The analysis provides insights into the tempo, rhythm and timing of cannabis transactions, over the course of a day, on weekends compared to weekdays and in relation to payday. It is found that buyers prefer lower price over wider selection and that sellers adapt their opening hours according to temporal patterns in transaction frequency. The findings are relevant for deployment of police resources in regards to maintaining post-crackdown residual deterrence.