Julien Chopin
Biographic Data
| ID | 4075881 |
|---|---|
| NAME | Julien Chopin |
| GIVEN NAMES | Julien |
| FAMILY NAME | Chopin |
| SIGNATURE | CHOPIN J |
| AFFILIATIONS | Simon Fraser University |
| ORCID | 0000-0003-4459-2530 |
| VERIFIED | Yes |
| TOTAL WORKS | 46 |
| TOTAL CITATIONS | 21 |
| AUTHOR COUNT | 46 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2019 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 3 |
Stranger Danger
Victims of sexual homicide may be deceived by perpetrators who use a friendly approach to gain access to them, making it difficult for the victim to assess the danger posed by the stranger. When investigating sexual homicides committed by strangers, investigators often lack direct information, including how the perpetrator gained access to the victim. To identify potential predictors of the approach method used in sexual homicides, this study ana…
Special issue
“Sorting Things out”
Sexual homicides are complex crimes that have been the focus of numerous classification systems aimed at aiding investigations, understanding offender behavior, and informing treatment plans. Over the past 25 years, a variety of typologies have been developed to categorize these offenses. This scoping review examines these typologies, exploring their evolution and the key offender, victim, and crime characteristics used to define them. The review…
Lost Highways
Despite cultural references to the dangers of hitchhiking, particularly for sexual homicide, no published research investigates these incidents from both an offender and crime scene perspective. Using the Sexual Homicide International Database (SHIelD), we explore lifestyle risk by comparing sexual homicide cases involving hitchhiking victims to those involving victims engaged in sex trade work. The results, based on the use of bivariate and mult…
Unraveling the Sexual Victimization of Sex Workers
Past research on violence against sex workers has contributed to our understanding of this phenomenon yet, often do not offer concrete preventative measures. The current study aims to investigate this issue through an environmental criminology perspective, and to identify measures that can be implemented to decrease violence through a situational crime prevention framework. Our sample consist of 402 French sex workers who experienced violent vict…
Attrition in intimate partner violence cases through the criminal justice system
Intimate partner violence (IPV) poses significant social and legal challenges, with severe consequences for victims and society. Despite the criminal justice system’s crucial role, attrition – where reported cases diminish before prosecution – remains a major concern. This scoping review examines patterns and predictors influencing attrition in IPV cases, analysing 24 empirical studies. Findings reveal that 63% to 97.2% of reported cases do not r…
Leaders and Leadership in Criminal Activities
The objective of this article is to conduct a scoping review of existing literature on the subject of leadership within the criminal domain. Drawing from theoretical models used to explain leadership in social organizations, this study analyzed 71 articles presenting findings or reflections contributing to a better understanding of leaders and leadership within criminal organizations. The results yielded three overarching themes and eight sub-the…
Child sexual abuse in the catholic church
The Dynamics of Internet Sexual Solicitation
Trophy, souvenir, or simple theft? Taking items from the victim in sexual homicide
Although most people have heard the terms ‘souvenirs’, ‘trophies’, and ‘mementos’, discussed in books and movies on the true crimes of sexual murderers, limited research has delved into the phenomenon of theft in sexual homicide (SH). Using a sample of 762 SH cases coming from the Sexual Homicide International Database, the current study examines the crime‐commission process of the pre‐crime, crime, and post‐crime phases of sexual homicide offend…
How to get away with (sexual) murder? Unraveling cold cases in sexual homicide using a hybrid modeling probabilistic approach
This study examines Sexual Homicide (SH) cases, analyzing the transition to cold cases through a non‐discretionary lens. Utilizing the SH International Database, it explores the interplay between offender behavior, victim characteristics, and crime context. Advanced methodologies, including sequential logistic regression and Artificial Neural Networks, identify key predictors of case resolution. Results highlight the critical influence of victim …
Identifying victim types in sexual homicide
Sexual homicide (SH) research has focused on those who commit these crimes and the crimes themselves. This leaves the victim, an equally crucial piece to the puzzle, left as a sort of afterthought, despite the valuable insight that victimology provides to the crime. For the current study, victim information related to their routine activities and lifestyles was taken from an international database containing 662 solved cases of SH. Nine victim va…
What if Marquis de Sade Was a Woman? New Evidence of Sex Differences in Behavioral Manifestation of Sadism
This study aims to explore the behavioral manifestation of sadism in females involved in sexual crimes. The sample includes 24 female sex offenders for which sadism was assessed with the SeSaS. To conduct a gender-based comparison analysis, we conducted a random selection of 100 sadistic male offenders. Bivariate comparisons and multidimensional scaling analysis were used to determine whether behavioral manifestation and dimensions of sadism are …
Sadistic Sexual Crimes Against Children
Individuals who commit sexual offenses against children have been shown to be distinctive from adult offenders across both individual and crime characteristics. However, an examination of the literature shows that there are gaps in the research related to whether sadism manifests differently between those who target child compared to adult victims. The current study therefore aimed to explore the differences in the characteristics, crime-commissi…
Is Criminal Expertise a Feature of Unsolved Sexual Assault Involving Theft
Past studies on criminal expertise showed that some sexual offenders possess skills related to avoiding detection. An important question that remains unaddressed in the literature, however, is whether unsolved cases can be used as a “proxy” for expertise. The present study sought to provide the first empirical examination of criminal expertise in a sample of solved ( n = 732) and unsolved ( n = 309) stranger sexual assault cases involving theft. …
One Size Doesn’t Fit All
Approximately one in seven homicides globally is committed by a partner within an intimate relationship. While criminology research on intimate partner homicide (IPH) perpetrators is extensive, their interactions with law enforcement remain underexplored. This study examines the criminal trajectories of IPH perpetrators to ascertain whether they exhibit common or diverse patterns. Utilizing data from Quebec’s official criminal events database, th…
Towards a multifactorial framework of the Roma’s victimisation
The European Roma population faces violence and discrimination, but the causes of their victimisation are not well understood. This study used a multi-theoretical framework to analyse data from a representative sample of 2,913 Roma surveyed in European Union Minorities and Discrimination Survey II. The results showed that police stops perceived as ethnically motivated, exposure to risky situations, and acceptance of violence when insulted predict…
When failure is the option
We investigate the concept of “criminal failure” in sexual crimes and the relevance of various theoretical frameworks for its understanding: individual offender's rational choice, environmental influences and routine activities, victimological characteristics from lifestyle theory, and crime interaction factors. We examined a sample of 1121 “failed” cases (i.e., attempted but not completed) and 1500 “successful” cases (i.e., completed) of sexual …
The math of serial murder
Earlier or Later? A Survival Analysis of Criminal Career and Contextual Factors Associated With Intimate Partner Homicide in Canada
Intimate partner homicide (IPH) can be viewed as the ultimate result of a potential spectrum of violence that can occur between intimate or former partners. The goal of this study is to identify the criminal career and contextual indicators that precede IPH. This study utilized a database encompassing all criminal events documented by the police in the province of Quebec from 1990 to 2022. Cox regression models indicate that the violent assault i…
Understanding the Sexual Victimization of Child and Elder Victims under the Lens of Interactional Victimology
This study aims to further our understanding of sexual victimization using the routine activities theory (RAT) framework. Specifically, this study compared offenders’ motivations as well as victims’ vulnerability, inertia, gratifiability, and accessibility in elder, child, and younger adult victims. The sample used in this study consists of 931 cases of extrafamilial sexual assaults that occurred in France. Bivariate and multivariate analyses wer…
The Unusual Case of Sexual Homicide Against Males
This study examines the specificities of sexual homicides involving male victims. First, this study aims to identify characteristics specific to SH involving male victims by comparing them to SH involving female victims and determine whether rational choice approach and routine activities theories are useful to explain the crime-commission process. Second, this study aims to provide the first empirical classification of SH involving male victims.…
Target Selection and Crime Characteristics
Abduction has been related to a more extensive violent criminal record, suggesting that it represents a risk for escalation in violence. As most research has investigated child abductions, the current study compares sexually motivated abductions ( n = 1,288) to nonsexually motivated abductions ( n = 270) and nonabduction sexual assaults ( n = 1,500) involving both children and adult women victims. Logistic regression analyses showed that compared…
Sexual Victimization Involving Solo Female Offenders
This study aims to provide a theoretically grounded analysis of the crime-commission process of solo females involved in sexual offending, using crime scripts. The sample includes 93 cases of sexual assaults perpetrated by female offenders in an extrafamilial context. Latent class analysis was used to identify the scripts involved in female sexual offending as well as to explore the relationship between each step of the crime-commission process. …
Like aspirin for arthritis”
Research summary Crackdowns are law enforcement strategies based on the principles of deterrence theory, which stipulates that offenders are rational actors who will refrain from crime if perceived risks are higher than perceived benefits. Studies have shown that the effects of police street drug crackdowns are mostly short termed and followed by considerable displacement. In the early 2010s, an important part of illicit drug trades moved online …
Factors influencing the use of forensic awareness strategies in sexual homicide
Rapists' behaviors to avoid police detection
Why didn’t you resist? Situational influences on victim resistance during a rape
The purpose of this study is to examine factors influencing victim resistance during rape. Specifically, this study aims to understand which factors impact victim resistance using a multivariate approach focused on situational aspects related to offender, victim, and crime context characteristics. The sample includes 2,017 rape cases where victims did not resist, resisted passively, resisted verbally, or resisted physically. The first step of thi…
Like aspirin for arthritis”
Research summary Crackdowns are law enforcement strategies based on the principles of deterrence theory, which stipulates that offenders are rational actors who will refrain from crime if perceived risks are higher than perceived benefits. Studies have shown that the effects of police street drug crackdowns are mostly short termed and followed by considerable displacement. In the early 2010s, an important part of illicit drug trades moved online …
Less exposed, more vulnerable? Understanding the sexual victimization of women with disabilities under the lens of victimological theories
This study aims to examine the sexual victimization process of individuals with disabilities using the interactional victimology theoretical framework. Specifically, we compare the victimological indicators of four different situations: victims were not disabled, victims were physically disabled, victims were psychologically disabled, and finally, victims were both physically and psychologically disabled. The sample used in this study consists of…
Till death do us part’
Time after time
Lethal outcome in elderly sexual violence
Rapists' behaviors to avoid police detection
La gestion des informations dans le cadre de l’analyse criminelle de la délinquance sexuelle sérielle
Cette recherche s’intéresse à la quantité d’information nécessaire aux systèmes de gestion des liens permettant d’identifier les cas sériels de criminalité violente. L’objectif de cette recherche est de tester empiriquement et de discuter de la pertinence de réduire le contenu de ces outils. Les données utilisées proviennent d’une extraction de la base de données du ViCLAS en France. Les analyses portent sur un échantillon de variables les plus u…
Étude sur l’impact d’un délai d’effacement automatique pour les profils ADN de personnes prévenues
Depuis plus de 30 ans, les traces ADN contribuent significativement aux investigations criminelles, grâce notamment à la mise en place de banques de données génétiques. Si leur utilité est amplement reconnue, certains aspects – comme la durée de conservation du profil des individus – continuent à alimenter les débats, de par les implications en matière d’atteinte au droit de la personne. En Suisse, la durée de rétention dépend de l’issue de la pr…
Factors influencing the use of forensic awareness strategies in sexual homicide
The lesser of two evils? Sexual homicide as an “hybrid” offense
Lethal outcome in elderly sexual violence
Offender and victim ‘journey-to-crime’
L’influence des comportements paraphiliques sur le mode opératoire des agresseurs commettant des viols
Cette étude s’intéresse à l’influence que peut avoir la présence de comportements paraphiliques sur le processus criminel des violeurs et sur le modus operandi qu’ils utilisent pour mener à bien leur acte. L’objectif de cette recherche est de tester plusieurs dimensions des comportements paraphiliques telles que leur présence ou non, leur nombre, ainsi que leur type. Cette recherche se base sur un échantillon de 3253 cas de viols commis en France…
Les agressions sexuelles d’enfants non résolues par la police
Les agressions sexuelles d’enfants sont considérées comme l’une des formes de crimes les plus graves. Malgré l’octroi de moyens humains et financiers importants aux forces de police, certains de ces crimes ne sont pas résolus. La perspective non discrétionnaire suggère que les agresseurs adoptent des comportements particuliers qui diminuent leurs risques d’être identifiés par la police. Cette étude explore le rôle des choix et comportements des a…
Making sense of senseless murders
The phenomenon of “senseless” or “motiveless” homicide refers to homicides that lack an objective external motivation. Despite the unique challenges these homicides pose to police, few empirical studies have been conducted on the topic and existing studies are limited to clinical studies using small samples. To overcome existing empirical shortcomings, the current study used a sample of 319 homicide cases where no motive was established during th…
“Drop the Body”
The current study investigates body disposal patterns in sexual homicide and examines whether offender’s behavior differ between solved and unsolved cases. To address these two research questions in line with rational choice perspective, a series of logistic regression analyses was conducted on a sample of 250 solved, and 100 unsolved sexual homicide cases in Canada. Within solved cases, results show that if victim is a prostitute, body found con…
Patterns of Necrophilic Behaviors in Sexual Homicide
This study aims to empirically explore the patterns of necrophilic behaviors in sexual homicide. More specifically, the study investigates offender, victim, and crime characteristics of sexual homicides where necrophilic acts were perpetrated, to determine whether the primary motivation to kill is associated with the attainment of corpses or whether the post-mortem sexual acts were secondary deviant behaviors. The sample used in this study consis…
Death in Sadistic Sexual Crimes
This study aims to determine the factors associated with the victim’s death in sadistic sexual crimes. Specifically, this article examined whether the lethal outcome is more likely to be associated with an escalation of violence during the crime-commission process, an instrumental motivation, or the manifestation of specific sadistic fantasies. We used a database including 735 cases of sadistic sexual assaults. Among this sample, 100 sadistic sex…
Criminal Expertise and Sexual Violence
Criminal expertise relates to the notion that some individuals may develop domain-specific offending skills that differentiate them from those with less skills or experience (i.e., novices). In the expertise literature, burglary has emerged as a distinct type of “expert” offense, therefore the current study sought to determine whether criminal expertise is more evident in the crime-commission process of sexual burglary compared to sexual robbery.…
Why didn’t you resist? Situational influences on victim resistance during a rape
The purpose of this study is to examine factors influencing victim resistance during rape. Specifically, this study aims to understand which factors impact victim resistance using a multivariate approach focused on situational aspects related to offender, victim, and crime context characteristics. The sample includes 2,017 rape cases where victims did not resist, resisted passively, resisted verbally, or resisted physically. The first step of thi…
Time after time
Typologie des agresseurs sexuels sadiques
Cette étude a pour objectif de déterminer si les agresseurs sexuels sadiques constituent une population hétérogène. Notamment, le premier objectif de cette étude consiste à déterminer s’il existe des groupes distincts d’agresseurs sadiques en fonction de la manière dont se manifestent leurs fantaisies sexuelles déviantes. Le second objectif à déterminer si les facteurs individuels ainsi que les caractéristiques du mode opératoire sont associés à …
Understanding the Sexual Victimization of Child and Elder Victims under the Lens of Interactional Victimology
This study aims to further our understanding of sexual victimization using the routine activities theory (RAT) framework. Specifically, this study compared offenders’ motivations as well as victims’ vulnerability, inertia, gratifiability, and accessibility in elder, child, and younger adult victims. The sample used in this study consists of 931 cases of extrafamilial sexual assaults that occurred in France. Bivariate and multivariate analyses wer…
The Unusual Case of Sexual Homicide Against Males
This study examines the specificities of sexual homicides involving male victims. First, this study aims to identify characteristics specific to SH involving male victims by comparing them to SH involving female victims and determine whether rational choice approach and routine activities theories are useful to explain the crime-commission process. Second, this study aims to provide the first empirical classification of SH involving male victims.…
Target Selection and Crime Characteristics
Abduction has been related to a more extensive violent criminal record, suggesting that it represents a risk for escalation in violence. As most research has investigated child abductions, the current study compares sexually motivated abductions ( n = 1,288) to nonsexually motivated abductions ( n = 270) and nonabduction sexual assaults ( n = 1,500) involving both children and adult women victims. Logistic regression analyses showed that compared…
Sexual Victimization Involving Solo Female Offenders
This study aims to provide a theoretically grounded analysis of the crime-commission process of solo females involved in sexual offending, using crime scripts. The sample includes 93 cases of sexual assaults perpetrated by female offenders in an extrafamilial context. Latent class analysis was used to identify the scripts involved in female sexual offending as well as to explore the relationship between each step of the crime-commission process. …
Like aspirin for arthritis”
Research summary Crackdowns are law enforcement strategies based on the principles of deterrence theory, which stipulates that offenders are rational actors who will refrain from crime if perceived risks are higher than perceived benefits. Studies have shown that the effects of police street drug crackdowns are mostly short termed and followed by considerable displacement. In the early 2010s, an important part of illicit drug trades moved online …
Less exposed, more vulnerable? Understanding the sexual victimization of women with disabilities under the lens of victimological theories
This study aims to examine the sexual victimization process of individuals with disabilities using the interactional victimology theoretical framework. Specifically, we compare the victimological indicators of four different situations: victims were not disabled, victims were physically disabled, victims were psychologically disabled, and finally, victims were both physically and psychologically disabled. The sample used in this study consists of…
Till death do us part’
Dark web pedophile site users' cybersecurity concerns
Psychology (38 works) · Medicine (32 works) · Criminology (31 works) · Poison control (31 works) · Crime Patterns and Interventions (28 works) · Medical emergency (27 works) · Computer Science (23 works) · Human Factors and Ergonomics (22 works) · Social Psychology (22 works) · Criminal Justice and Corrections Analysis (21 works)