Sexual assaults in Geneva between 2006 and 2010

In Geneva, all sexual assault victims are examined both by a gynaecologist and a forensic pathologist with special training in clinical forensic medicine. Between 2006 and 2010, 473 victims were examined following such an assault. Over the years, the number of sexual assaults rose steadily. Most victims were aged between 15 and 30 years. The majority of the assaults occurred at night and on the weekend and often happened at the place where the perpetrator or the victim lived. Usually, the offender acted alone and was known to the victim. Many victims hesitate to present for an examination, which makes it difficult to collect evidence. Penetration was usually vaginal and without the use of a condom. Injuries on the body or genitals were seen in only half of the cases for the first ones and in less than one third for the second ones. Quite often (at least in 42 % of the cases), the victim consumed alcohol before the assault and the use of drugs--especially cannabis--was not uncommon either.     

ALCOHOL AND THE RISK OF PHYSICAL AND SEXUAL ASSAULT VICTIMIZATION*

We examine the effect of alcohol consumption on an individual's risk of victimization for physical and sexual assault. Analyses of the National Violence Against Women Survey suggest that the frequency and amount of alcohol people consume has strong effects on their risk of victimization when drinking, but is not associated with their victimization while sober. This evidence suggests that drinking has a situational causal effect on victimization, and cannot be attributed to opportunity factors associated with drinking. This effect is particularly strong for men and young adults, who may be more likely to behave provocatively when under the influence. Victims of sexual assaults and men assaulted by their female partners are also particularly likely to be drinking.     

Stranger and acquaintance sexual assault of adult males

This study examined victim and assault characteristics and the nature and extent of coercion, violence, and physical injuries among adult male victims of sexual assaults. Client records of three groups presenting to a sexual assault care center were included: males assaulted by a stranger (n = 64), males assaulted by an acquaintance (n = 81), and females assaulted by an acquaintance (n = 106). Study results revealed that male victims of sexual assault tended to be young, single men who reported high rates of vulnerabilities such as homelessness and physical, psychiatric, and cognitive disabilities. Male stranger assailant victims were more likely to experience assaults involving weapons and physical violence. Injuries sustained by victims and services delivered at the sexual assault care center were similar for both male and female clients. The results of this study reveal new information about violence in male sexual assaults and the vulnerability of the male victims.     

The relationship between the quantity of alcohol consumed and the severity of sexual assaults committed by college men

Researchers have suggested that intoxicated perpetrators may act more violently than other perpetrators, although empirical findings have been mixed. Past research has focused on whether or not alcohol was consumed, rather than the quantity consumed, and this may explain these inconsistent findings. The authors hypothesized that the quantity of alcohol consumed would have a curvilinear relationship to the severity of the assault. Data were collected from 113 college men who reported that they had committed a sexual assault since the age of 14. The quantity of alcohol that perpetrators consumed during the assault was linearly related to how much aggression they used and was curvilinearly related to the type of sexual assault committed. The quantity of alcohol that victims consumed during the assault was linearly related to the type of sexual assault committed. Strategies for improving assessment of alcohol consumption in sexual assault research are discussed.     

Combined Statistical Analyses of Forensic Evidence in Sexual Assault: A Case Report and Brief Review of the Literature

DNA analysis has been widely used in the forensic field in order to contribute to identifying the perpetrator of a crime. Forensic investigation in sexual assaults usually focuses on locating and identifying biological fluids, followed by DNA analysis. The identification of certain compounds present in condoms can be useful to reconstruct the occurred event, especially in cases of sexual assaults where the DNA analysis did not show the presence of a male profile and where RNA analysis did not show the presence of sperm markers. Herein we describe the case of a woman reporting to be victim of sexual assault, who was not able to provide accurate information concerning the dynamics of the event; she remembered only forced penile–vaginal penetration by a single perpetrator. We performed short tandem repeat (STR) analyses and mRNA typing for forensic genetics testing on vaginal and rectal swabs collected on the victim, and Fourier-transform infrared spectroscopy (FTIR) followed by chromatographic analyses for the detection of condom compounds on the same swabs. The STR analysis showed only the victim’s genetic profile, and RNA analysis showed only the presence of vaginal and skin markers. In this situation, the identification of condom compounds residues on vaginal swabs became important as it complemented other collected evidences allowing the Court to reconstruct the events. A proposal of likelihood ratio (LR) calculation for the assessment of the weight of evidence in this case is described.     

The Role of Perpetrator Alcohol Use in the Injury Outcomes of Intimate Assaults

Little research has been conducted on the role of perpetrator alcohol use in the injury outcomes of intimate assaults, although alcohol use by an intimate partner may be related to more severe assault outcomes (physical injury and need for medical attention) than is no alcohol use. The role of perceived perpetrator alcohol use in the injury outcomes of intimate assaults (N = 909) was analyzed using 1992–1996 National Crime Victimization Survey data. Logistic regression analyses demonstrated that perpetrator alcohol use was associated with increased likelihood of physical injury and marginally associated with more medical attention seeking by the victim when demographic variables and assault characteristics were controlled. Suggestions for future research on the relationship between alcohol and intimate assault outcomes are presented.     

Characterization of condom lubricant components using Raman spectroscopy and Raman chemical imaging

A condom can be described as a protective sheath used as a contraceptive or to protect against sexually transmitted diseases. However, individuals also use condoms during the commission of sexual assaults to prevent identification through deposited biological material. Raman spectroscopy offers a novel approach to identifying the presence of condom lubricant components. Furthermore, Raman chemical imaging expands on conventional Raman spectroscopy to characterize multiple condom lubricant components simultaneously in a manner that effectively demonstrates heterogeneous sample mixtures both spectrally and spatially. Known reference materials, liquid and solid lubricant components of common condom brands were successfully characterized using Raman dispersive spectroscopy and Raman chemical imaging without extensive sample preparation inherent to other analytical methods. The characterization of these materials demonstrates the potential of this technique to become a routine screening method for condom lubricants. This preliminary investigation provides a basis for future studies to determine the feasibility of Raman spectroscopy and Raman chemical imaging for condom lubricant trace detection in case type samples.     

College Women and Sexual Assault: The Role of Sex-related Alcohol Expectancies

This study examined the relationship between alcohol, sex-related alcohol expectancies, and sexual assaults among women college students. Participants completed measures of sexual behaviors, sexual victimization experiences, sex related alcohol expectancies, and drinking habits. Based on participants’ responses women were categorized as having experienced no assault, unwanted sexual contact, sexual coercion, attempted rape, and rape. It was observed across groups that relative to controls, women reporting attempted rape and rape consumed higher levels of alcohol. Within group comparisons revealed that relative to controls, victimized women endorsed higher levels of sex-related alcohol expectancies. In the prediction of severity of sexual victimization, regression analyses revealed an interaction between alcohol consumption and expectancy of vulnerability to sexual coercion. At higher levels of alcohol consumption women endorsing high vulnerability to sexual coercion experienced more severe victimatization. Implications of the findings are discussed. This work was conducted in partial fulfillment of the requirements for the Doctor of Philosophy degree by the first author under the direction of the third author.     

Predicting Officer Physical Assaults at Domestic Assault Calls

Police work is rife with the potential for physical harm, and domestic assault calls are one source of assaults on officers. Inability to accurately predict what circumstances might lead to an attack is one cause of officer cynicism and paranoia. Having the ability to identify which suspects pose the greatest threat of assault would allow officers to take appropriate protective measures. Using data collected from 1,951 domestic assault calls across three cities, the present study compared characteristics and behaviors of the batterers with whether or not the batterers physically assaulted the responding officers. Findings revealed five significant batterer characteristics (employment status, shared residence with abuse victim, alcohol consumption, property damage, and hostile demeanor toward officers) that successfully predicted officer assaults. These risk factors may be incorporated into police safety training in the response to family violence calls.     

Electrospray and MALDI mass spectrometry in the identification of spermicides in criminal investigations.

Electrospray ionization (ESI) and matrix-assisted laser desorption/ionization (MALDI) mass spectrometry have been used to examine evidence in a sexual assault investigation. Because condoms are being used increasingly by sexual assailants and some condom brands include the spermicide nonoxynol-9 (nonylphenoxy polyethoxyethanol) in the lubricant formulation, the recovery, and identification of nonoxynol-9 from evidence items may assist in proving corpus delicti. A method was developed for the recovery of nonoxynol-9 from internal vaginal swabs and for its identification by reverse phase liquid chromatography/electrospray ionization mass spectrometry (LC ESI-MS), nanoelectrospray ionization (nanoESI) mass spectrometry, and high resolution MALDI Fourier transform mass spectrometry (MALDI-FTMS). The method was tested on extracts from precoitus, immediate postcoitus, and four-hours postcoitus vaginal swabs provided by a volunteer whose partner does not normally use condoms, but for this trial used a condom having a water-soluble gel-type lubricant that includes 5% nonoxynol-9 in its formulation. Subsequently, LC ESI-MS was used to identify traces of nonoxynol-9 from the internal vaginal swab of a victim of a sexual assault.     

Sexual assault perpetrators' tactics: associations with their personal characteristics and aspects of the incident

Past theory and empirical research have consistently associated a number of risk factors with sexual assault perpetration. This study extends past research by considering if the tactics which perpetrators use to obtain sex are associated with these risk factors or with characteristics of the sexual assault. Audio computer-assisted self-interviews were completed with a community sample of young, single men. Few participants reported using physical force as a tactic to obtain sex, thus this article focuses on 457 participants who used verbal coercion ( n = 152) or the victim's impairment (n = 39) to obtain sex or who were nonperpetrators (n = 266). Discriminant function analysis correctly classified 70% of participants. As hypothesized, analysis of covariance indicated that both groups of perpetrators scored higher than nonperpetrators on measures of negative attitudes toward women, positive attitudes about casual sex, personality traits associated with nonclinical levels of psychopathy, antisocial behavior, and alcohol problems. As compared to nonperpetrators describing their worst date, perpetrators knew the woman longer, used more isolating and controlling behaviors, misperceived her sexual intentions for a longer period of time, and engaged in more consensual sexual activities with the woman. Perpetrators who used impairment tactics did not usually consume more alcohol than other participants; however, they consumed much more alcohol during the incident. Although verbal coercion and taking advantage of an impaired victim are sometimes viewed as less serious tactics than the use of force, these findings demonstrate that perpetrators who use these strategies have personality, attitude, and experience profiles that distinguish them from nonperpetrators.     

Liberating Discretion: The Effect of Rape Myth Factors on Prosecutors’ Decisions to Charge Suspects in Penetrative and Non-Penetrative Sex Offenses

Abstract

In sexual assault cases, prosecutorial charging decisions may be influenced by legal factors like offense seriousness and convictability and extralegal rape myths. We use data on sexual assaults in Los Angeles, to test for the effects of victim behavior, victim credibility, and “real rape” stereotypes on the decision to file charges. We also test the liberation hypothesis, examining whether rape myths influence the charge decision more in less serious nonpenetrative cases then in penetrative cases. Results show that victim credibility and behavior, but not consistency with real rape stereotypes, affect charging decisions, even after controlling for legally relevant factors, and they influence prosecutors’ charging decisions equally in penetrative and nonpenetrative cases. Rape myths also influence the charging decision indirectly via victim cooperation. We conclude that rape myths are incorporated into the criminal justice system’s definition of and response to sexual violence, so cannot be addressed by changing case screening policies.     

Genitoanal injury in adult female victims of sexual assault

OBJECTIVES: To evaluate the presence and extFent of genitoanal injury among sexually assaulted women and to estimate the risk of injury in subgroups according to the type of assault and to the sexually assaulted women's susceptibility to injury. STUDY DESIGN: A case-control study of 249 women exposed to sexual assault. Injury identified by gross visualization. Women with and without injury were compared. Logistic regressions analyses were performed to calculate the risk of injury. RESULTS: Thirty-two percent sustained genitoanal injury. Anal penetration and assaults on women without prior sexual experience were associated with genitoanal injury. CONCLUSIONS: Most women do not have visible genitoanal injuries. The risk of sustaining genitoanal injury during a sexual assault is higher among women without prior sexual intercourse experience and among women exposed to anal penetration. The severity of the assault is a poor predictor of genitoanal injury.     

A methodology based on NMR spectroscopy for the forensic analysis of condoms.

Both solution and solid state Nuclear Magnetic Resonance (NMR) spectroscopic techniques have been used to determine differences in commercially available condoms. Whilst solid state NMR is useful for determining the polymer backbone, it is not useful for forensic analysis due to the commonality of the latex condom. However solution NMR spectra obtained following a simple extraction procedure using hexane, provides a fingerprint of the additives in the lubricants. Following the development of a flow chart, basing decisions on the presence of particular peaks present in the solution spectra, 33 of 38 condoms could be individualized. Samples were also analyzed after having the lubricant manually removed and soaking the condom in water for 3 to 24 h. These experiments were performed to simulate a case of the sample having been used and disposed of by flushing down the toilet, as may be experienced in a case of a sexual assault. The results indicated that the only significant water soluble component was polyethylene glycol. The overall results suggest that the method developed may be a quick and useful technique in characterizing condoms. The information obtained can be used to provide associative evidence between suspect and crime, and so be useful in sexual assault cases.     

Examining the characteristics of male sexual assault targets in a Southern maximum-security prison

Studies concerning inmate-on-inmate sexual assaults within male correctional facilities are sparse in the sociological and correctional literatures. Only a few studies have specifically examined the characteristics of male inmate sexual assault targets. The current research sought to address this gap by providing an examination of factors related to victimization likelihood. Using data gathered in March 2000 from 142 inmates (18% return rate) in one Southern maximum-security prison, the authors examined demographic and behavioral characteristics of male inmate sexual targets. Based on inmates' self-reports of sexual victimization--threatened and/or forced sexual assault encounters--correlates of victimization were identified. Approximately 18% of the inmates reported inmate-on-inmate sexual threats, and 8.5% reported that they had been sexually assaulted by another inmate while incarcerated.     

Sexual relationship power, intimate partner violence, and condom use among minority urban girls

This study examined the association between sexual relationship power, intimate partner violence, and condom use among African American and Hispanic urban girls. In this sample of 56 sexually active girls, 50% did not use condoms consistently and therefore were at higher risk for acquiring HIV or sexually transmitted diseases (STDs). Teens who experienced more intimate partner violence had a significantly higher likelihood of inconsistent condom use and therefore a greater risk for HIV/STDs. Girls' sense of sexual control in their relationships was not directly associated with inconsistent condom use but was inversely related to verbal and emotional abuse. Interventions aimed at reducing HIV/STD risk for adolescent girls need to address patterns of dominance and control in adolescent relationships as well as multiple forms of partner violence. This suggests the need for multilevel intervention approaches that promote girls' agency and multiple ways to keep girls safe from perpetrators of partner abuse.     

The epidemiology of female rape victims who seek immediate medical care: temporal trends in the incidence of sexual assault and acquaintance rape

Women who seek medical care following sexual assault are usually evaluated and treated in an emergency department (ED). Therefore, EDs can be an important source of sexual assault surveillance data. The authors compared the incidence of sexual assault presenting for emergency care in a single county during July to November of 1974 and 1991. Participants included all female sexual assault victims aged 14 and older who presented for ED evaluation. Treating physicians prospectively collected data using standardized forms. The z statistic was used to compare sexual assault incidence. There was a 60% increase in the incidence of sexual assault victims presenting for emergency care in 1991 compared to 1974, primarily due to an increase in the incidence of women presenting to the ED after rapes by known assailants. In contrast, the annual incidence of reported stranger assaults was similar in the two study years.     

The impact of intimate partner violence on women's condom negotiation efficacy

HIV prevention efforts promote the use of condoms to prevent the spread of HIV and other STDs. Thus, a woman's agency to practice healthy sexual behaviors necessarily involves negotiation with another person. This poses unique challenges for women who have limited power in relationships. The current study explores how the experience of intimate partner violence (IPV) impacts a woman's confidence in her ability to negotiate condom use with a sexual partner (i.e., condom use self-efficacy), using data from incarcerated females in three states, who were interviewed just prior to release back into the community. The direct effect of experiencing IPV as an adult, controlling for other risk factors, on condom use self-efficacy has not previously been empirically tested. Results show that IPV experiences among women significantly decreases their confidence in negotiating condom use with a partner, putting them at a higher risk of HIV infection than women who do not report having recently experienced IPV.     

The role of the new "date rape drugs" in attributions about date rape

This study investigates the effect of voluntary and involuntary drug use on attributions about sexual assault. The sample was composed of 280 randomly selected male and female undergraduate students. The type of drug used (GHB, alcohol, or none) and the voluntariness of the administration were varied in an unambiguous date rape scenario. Participants viewed sexual assault facilitated by alcohol or drugs similarly to sexual assault without drug or alcohol involvement, assigning the highest levels of responsibility and blame to the perpetrator and the lowest levels of both to the victim in these situations. In contrast, women's voluntary consumption of drugs prior to a sexual assault reduced perpetrator responsibility and blame and increased blame to the victim compared to other situations (except in some cases, voluntary drunkenness). These findings extend the limited research on date rape drugs and previous work on the influence of alcohol on date rape attributions.     

Trends in Assault: On the Relationship between the Assault Rate and Selected Social Indicators in Post-War Finland

This article examines to what extent different social indicators can explain statistically the development or changes in the volume of assaults. First, the development of recorded assault criminality in Finland during the time period 1950-2000 is examined. By comparison with victim surveys it is concluded that the longterm increase of recorded assaults reflects partly the real development but is also partly a result of the increased rate of detection of violence. The urbanization of Finnish society is perhaps the key factor behind this development. It has inevitably increased factual physical opportunities for different kinds of violent encounters but at the same time also the probability that such incidents are registered. As factors that could potentially explain shortterm variation in the assault rate, selected social indicators such as alcohol consumption, rate of immigration and unemployment are examined. To guard against spurious relationships due to highly influential or outlying data points, a robust method of estimation of the regression model - the least median of squares - is also used. Of the indicators examined, consumption, private consumers' expenditure and the clearance rate of assaults have the best explanatory power. However, although the relationship of these indicators with annual changes alcohol in the assault rate is statistically significant, there should be no illusion about the ability to predict the future development of assault rate with precision using such social indicators. It is stressed that the assault rate is also determined by qualitative factors connected with opportunities for crimes and criminal motivation that can hardly be compressed into statistical timeseries or subjected to quantitative measurement.