Journal of Investigative Psychology and Offender Profiling最新文献

International comparisons of previous convictions (PC) and crime scene behaviours (CSB) of stranger sexual offences can inform offender profiling strategies; especially the degree to which pragmatic models cross validate across countries. The present study compared PC and CSB of 474 UK and 418 Spanish cases. CSB and PC were analysed using Chi-square. UK stranger sexual offenders displayed a higher proportion of all CSB analysed. UK offenders also had a significantly higher proportion of PC with the exception of violence offences. There were no significant differences in sexual pre-convictions. In both the UK and Spain the CSB ‘reference to the police’ was significantly association with the PC ‘Criminal damage’ no other similar significant associations were found. Explanations for these findings include differences between the countries in regards to: legislation, crime recording processes, data coding processes, with additional consideration of any cultural, environmental and contextual factors.

This study provides an in-depth analysis of American mass public shooting conclusions between 1966 and 2017. Specifically, this work examines differences in factors contributing to the perpetrator's likelihood of surviving, being killed, and committing suicide. Ten hypotheses, rooted in previous homicide, suicide, homicide-suicide, and mass public shooting literature consider different psychological, situational, and background factors shaping the outcome of mass public shootings. Significant findings indicate factors influencing perpetrators' suicide include suicidal ideation, higher victim counts, and suicide copycat effects. Factors influencing perpetrators being killed similarly include higher victim counts, the arrival of law enforcement, lethal/non-lethal resistance, and government targets. This investigation provides practical implications for practitioners and policymakers, especially law enforcement and mental health practitioners, seeking to develop intervention and prevention strategies for addressing suicidal ideation and its most lethal outcome: mass public shootings.

The aim of the current research was to replicate Van Veldhuizen, Horselenberg, Landstrom, et al.’s (2017) vignette study among novice Estonian police cadets to map their interviewing skills. Sixty-one police cadets from the Estonian Academy of Security Sciences were asked to respond to one of four vignettes that contained fictitious asylum narratives. Two of the vignettes contained no evidence for the origin of the asylum seeker, and the other two contained no evidence for the claim of persecution. The cadets were asked to formulate five questions that would help them to assess the credibility of the applicant's claim. We coded the style, type, and content of the questions. Our analyses showed that, in line with best practice, the cadets mainly formulated open questions in an information-gathering style. A thematic analysis revealed that when a claim about origin was assessed, cadets typically formulated questions about life in the country of origin, identity documents, and the flight to Europe. When assessing a persecution claim, in contrast, they mostly formulated case-specific questions.

A novel approach for geographic profiling was developed which assesses and integrates available information and evidence relevant to the case for the development of a geographic profile (Part I). The approach is flexible when lesser information is available, in the form of a centrographic model for when solely the victim abandonment or murder sites are known and a perpetrator trek model for instances where both encounter and abandonment sites are available. Eleven case studies were used to evaluate these models including a comprehensive application of the evidence driven model to the Yorkshire Ripper investigation from the view of the 1980 advisory team. The calculation of weights for and inclusion of factors in the prediction of perpetrator residence appears to be a viable method for geographic profiling. This method demonstrated the lowest average search area across all cases when compared to both centrographic spatial distribution strategies and the probability distance strategies implemented in software. Implications for casework include a reduction of resource use per serial incident such as manpower, time, and software expenses.

This article presents a new framework for the geographic profiling problem which assesses and integrates the travel environment of road networks; beliefs and assumptions formed through the investigation process about the perpetrator; and information derived from the analysis of evidence. Each piece of information is evaluated in conjunction with functions which gather real-time travel information, including both time and distance of likely perpetrator travel, and is then used to update prior beliefs about the potential base of operation of the perpetrator. A novel approach was developed to generate geographic profiles given different amounts of information about the perpetrator: a centrographic strategy for when only the victim dump sites are known; a perpetrator trek strategy for instances where both victim encounter and dump sites are available; and a formal evidence-driven model which leverages and integrates available information and evidence relevant to the case for the development of a geographic profile. A follow-up article will evaluate these models through a comprehensive application to the Yorkshire Ripper investigation (see Part II).

We reviewed the child and the adult literature on the impact of witnesses drawing what happened on the number of details recalled and the accuracy of the reported details. Most experiments reported a beneficial effect of drawing what happened (or drawing the scene) on the number of details reported primarily in free recall and sometimes also in cued recall. The consensus across studies was that drawing protocols did not negatively impact the accuracy of reported details (when accuracy was attainable) unless suggestive details were drawn. These results were largely consistent regardless of interviewer expertise or protocol used. Draw-and-tell instructions should be considered by forensic investigators for the following reasons: (1) the beneficial effect on number of details recalled with no detriment to accuracy, (2) the added benefit for children who need additional interviewer support, and (3) the ease at which the instruction can be implemented with minimal expertise or training. However, more ecologically valid research is needed to establish the efficacy of drawing (1) in forensic interviews, (2) in the presence of misinformation, (3) across instances of repeated event memory, and (4) across sequential interviews.

The aim of the study was to investigate the offence characteristics and motivations for revenge filicides. Revenge filicide is an act where one parent kills their own offspring for retribution to hurt and upset the other parent. The cases of 20 revenge filicide murderers (14 male and six female) were analysed to determine the motivations and offence characteristics of revenge filicide offenders. It is the first South African study to highlight the motivations and associated characteristics in revenge filicides. Themes such as a loss of social identity due to rejection; extreme rage type anger; external locus of control; sadism; a desire to cause pain and a need to inflict harm are highlighted in this article. The initial emotional response may escalate from mild anger to a level of narcissistic rage which eventually culminates in the murdering of the child to punish and hurt the other parent and to restore control.

Current literature on ‘honour’-based abuse (HBA) has largely focussed on exploring the lived experience of individuals, with limited analysis of the prevalence and associations of abuse characteristics. The aim of this study was to identify base rates of survivor, perpetrator and abuse characteristics. To identify these characteristics and their prevalence, 160 cases from Savera UK, a charity specialising in HBA and harmful practices, were coded for 66 variables and descriptive statistics produced. Fifteen of the coded abuse characteristics were present in more than 50% of cases, with ‘Emotional/psychological abuse and coercive control’, ‘Specific family cultural traditions’, ‘Gender-based socialisation’ and ‘Physical violence’ being the only characteristics seen in more than 75% of cases. These represent the core characteristics of HBA but there are indications of qualitative and quantitate differences in this sample. Understanding the prevalence of characteristics is key to effectively identifying abuse, supporting survivors and improving effective prevention strategies.

Rape offences in England and Wales garner incredibly low levels of convictions. The policing stage of a complaint experiences high levels of case discontinuances. The aim of this research is to explore police officer's decision making in rape cases and how that shapes the attrition of cases. The method employed in this study is qualitative interviews, with retired or serving police officers, with the use of vignettes. This study found that police officers prioritise and continue with cases that they predict to be most likely to reach a conviction. Such predictions are guided by assessments over the strength of the evidence in cases, informed by a range of legal and extra-legal factors. An overarching prediction employed is how likely a jury would be to convict a case. However, the participants reported that they find it incredibly difficult to accurately predict jury verdicts, making such decisions premised on a flawed logic.