Y-STRs in forensic medicine: DNA analysis in semen samples of azoospermic individuals

ABSTRACT: The incidence of rape has increased, especially in metropolitan areas, such as the city of São Paulo. In Brazil, studies about it have shown that the majority of this type of crime is committed by the relatives and persons close to the victim. This has made the crime more difficult to be denounced, as only 10% of the cases are reported to competent police authorities. Usually, cytological exams are carried out in sex crime investigations. The difficulty in showing the presence of spermatozoa is frequent, but it does not exclude the presence of male DNA. The absence of spermatozoa in material collected from rape victims can be due to several factors, including the fact that the agressor suffers from azoospermia. This condition can be the result of a successful vasectomy. As the majority of DNA in the ejaculation sample is from spermatozoa, there is much less DNA to be analyzed. This study presents the application of Y‐STRs (DYS19, DYS389I, DYS389II, DYS390, DYS391, DYS392, and DYS393) in DNA analysis of sperm samples from 105 vasectomized men. The study demonstrated a great variation in DNA concentration. DNA extraction and amplification was possible in all sperm samples even in the absence of spermatozoa. The same profile was observed, for each individual, from DNA extracted from blood, pre‐ and postvasectomy semen samples. The use of markers specific for Y chromosome in sex crime cases, especially in the absence of spermatozoa, is very important, mainly because in most situations there is a small quantity of the agressor's DNA in the medium and a large quantity of the victim's DNA.     

A Validation Study of the Langley et al. (2017) Decision Tree Model for Sex Estimation

Langley et al. (2017) developed a sex estimation decision tree utilizing two traditional cranial traits (glabella and mastoid) and a new trait: zygomatic extension. This study aimed to test the reliability of their zygomatic extension scoring method and validate their sex estimation method. Ordinal score data were collected from 281 male and female U.S. White and Black individuals. The five traditional cranial traits were collected from physical specimens, while zygomatic extension was scored from 3D cranial models. Intra‐ and interobserver analyses carried out on a subsample of 30 individuals indicate good agreement between zygomatic scores. The decision tree correctly sexed 71.5% of the sample, but a strong sex bias (94.2% correct for females, 49.3% correct for males) severely limits the utility of this method. The Walker (2008) and Stevenson et al. (2009) methods produced higher accuracy rates (80.8% and 82.6%, respectively), although these methods also produced sex and ancestry biases.     

Female sex offenders who abuse children whilst working in organisational contexts: offending,conviction and sentencing

To date, there has been very little research into the phenomenon of female-perpetrated institutional child sexual abuse (CSA). This study explored 71 cases of CSA perpetrated by women working with children, considered by UK police and courts between 2000 and 2016. Qualitative and quantitative content analysis was employed to examine court reports, professional regulatory body decisions, media reports and an online sentencing database in order to identify perpetrator and victim characteristics, the nature of the offending behaviour, modus operandi and criminal justice system responses. Findings indicate most women offended alone and had no previous criminal or employment records of concern. Victims were typically male and 15–16 years old. Most women received custodial sentences, typically of 2–3 years in length. Implications for policy and practice are also discussed.     

Moral disengagement and self-reported harassment proclivity in men: the mediating effects of moral judgment and emotions

Three online studies investigated the association between moral disengagement and men’s self-reported harassment proclivity. Participants (total N?=?336) were required to read a vignette depicting either quid pro quo harassment (studies 1 and 2) or hostile work environment harassment (study 3). A salience manipulation was used in each study to explore the causal directionality of this association. The mediating effects of moral judgment, negative affect (guilt and shame) and positive affect (happiness) about the harassment were also assessed as participants were asked to imagine themselves as the harassment perpetrator. Across the three studies, it was shown that moral disengagement had an indirect effect in predicting men’s proclivity to harass by lowering their moral judgment and negative affect about the harassment, conversely amplifying positive affect. Overall, the findings support social cognitive theory, indicating that moral disengagement may enable people to self-regulate their own behavioural inclinations to harass.     

Police officer attitudes to the practicalities of the sex offenders’ register,ViSOR and Child Sexual Abuse Disclosure Scheme in England and Wales

This paper examines police officer understandings of and attitudes to the sex offenders’ register, Violent and Sex Offenders’ Register (ViSOR) and Child Sexual Offender Disclosure Scheme (CSODS) in England and Wales – an under-researched area in the management of sexual offenders in the UK. This research is an adaptation of an American study utilising a mixed-methods approach, combining an online questionnaire survey (N?=?227) with a series of semi-structured interviews (N?=?27). The study found that police officers, irrespective of role, were generally supportive of the register, ViSOR and CSODS in principle, but they thought that logistics, practicalities, infrastructure, multi-agency collaboration and public understandings had problematic impacts on the scheme in practice. The participants believed that greater investment was needed in terms of time and resource to make the register, ViSOR and CSODS easier to use and access and thus fit for purpose.     

A qualitative analysis of nonoffending partners’ experiences and perceptions following a psychoeducational group intervention

The present research is a qualitative study analysing therapeutic letters written by the nonoffending partners of men who have perpetrated child sexual abuse, after completion of a psychoeducational group intervention. It sought to identify themes relating to their experiences post-intervention. Findings indicated that the intervention contributed to women having increased insight into sexual offending, and feeling more confident and empowered. In addition, they displayed an awareness of risk issues, and an intention to play a role in helping to manage their partner’s future risk. Implications for research and clinical practice are discussed.     

Preventing child sexual abuse through education: the work of Stop it Now! Wales

This paper presents the findings from an evaluation of education and awareness-raising programmes delivered by Stop it Now! Wales, aimed at engaging parents, carers and professionals in an informed discourse about child sexual abuse (CSA) and how to prevent it. Crucially, the findings presented in this paper show that the majority of research participants saw benefits in attending a programme. However, this varied by the type of programme attended and the nature of the impact reported. These variations are discussed in order to contribute to our understanding about how CSA issues are experienced and understood by parents and professionals; how they experience the transition of new knowledge; and what, if any, preventative action is taken by parents and professionals as a result of attending a Stop it Now! Wales CSA education and awareness-raising programme.     

Policing image-based sexual abuse: stakeholder perspectives

ABSTRACT

Image-based sexual abuse (IBSA) refers to the non-consensual recording, distribution, or threat of distribution, of nude or sexual images. Over the past five years, numerous jurisdictions have amended their criminal laws to respond more effectively to this growing phenomenon, yet increased criminalization has not automatically translated into increased prosecutions. Drawing on stakeholder interviews with 52 Australian legal and policy experts, domestic and sexual violence advocates, industry representatives, police, and academics, this article examines law enforcement responses to IBSA in Australia. We argue that although there is evidence to suggest IBSA is being treated more seriously by police, there are five primary barriers to responding to IBSA, including: inconsistent laws; a lack of resources; evidentiary limitations; jurisdictional boundaries; and victim-blaming or harm minimization attitudes. Suggestions are made for how to respond to these challenges to facilitate more effective policing of IBSA.     

Why do men rape? Understanding the determinants of rapes in India

Abstract

The study examines the determinants of rapes in India using state-level data for the time period 2001–2015. The panel model analysis indicates that there is no impact of education and economic growth, pointing towards a larger role of social and cultural factors in this context. The effect of deterrence variables (such as the number of police stations) is non-existent, possibly pointing towards the incompetency of the police force. Social attitude towards women emerged as the most robust predictor of the extent of rapes in India. We argue that the fundamental problem lies in the misogyny deeply rooted in the Indian society.