Validities and abilities in criminal profiling: a critique of the studies conducted by Richard Kocsis and his colleagues

In a recent issue of this journal, Kocsis reviewed the criminal profiling research that he and his colleagues have conducted during the past 4 years. Their research examines the correlates of profile accuracy with respect to the skills of the individual constructing the profile, and it has led Kocsis to draw conclusions that are important to the profiling field. In this article, the authors review the contributions of the Kocsis studies and critique their methodological and conceptual foundations. The authors raise a number of concerns and argue that data from the Kocsis studies fail to support many of the conclusions presented in his recent review. The authors present evidence in support of their assertions and provide recommendations that will allow future research in the area to generate data that are more meaningful and generalizable.     

Assessing the Use of Profiling in Searches by Law Enforcement Personnel

This article considers statistical means of evaluating profiling in searches of individuals by law enforcement agencies. It reviews examples of inappropriate methods that have been used to date. A relatively recent, more appropriate, and simple method is elaborated and its usefulness documented with data from Maryland State Police highway stops and searches. The method evaluates profiling for specified groups of interest by comparing the relative magnitudes of contraband find rates among those stopped and searched of each group. When find rates are approximately the same across groups, then profiling used in making the stops and searches is deemed effective and nondiscriminatory. With an increasing number of jurisdictions mandated to collect data on stops and searches, it is important that appropriate methods be used in their analyses so correct public policy conclusions can be drawn.     

PROFILING AND POLICE LEGITIMACY: PROCEDURAL JUSTICE,ATTRIBUTIONS OF MOTIVE,AND ACCEPTANCE OF POLICE AUTHORITY*

This paper reports the results of four studies that investigate racial profiling as an attribution about police motives. Each study explores, first, the types of police behavior that heighten or lessen the occurrence of profiling attributions and, second, the consequences of such attributions. Results support prior studies in finding that judgments about whether the police are profiling are associated with the level of public support for the police. The studies then extend the analysis of subjective profiling judgments by examining their antecedents. The findings support the procedural justice hypothesis that the fairness with which the police exercise their authority influences whether members of the public view the police as profiling.     

Exploring the perceived extent of and citizens' support for consumer racial profiling: Results from a national poll

Using data from a national Gallup poll, this article examines several hypotheses related to citizens' perceptions regarding the prevalence of consumer racial profiling (CRP) in the retail setting in America, as well as their support for the practice. The oversampling of Black and Hispanic respondents allowed for analyses that tested for racial differences in perceptions concerning the extent of CRP, and also for racial differences in the support for the use of CRP. The multivariate analysis found that Blacks were more likely than Hispanics and Whites to believe that CRP was widespread; there were no differences in the views of residents from urban and suburban areas; there were no differences between racial and ethnic groups regarding whether profiling was justified; and the more liberal the respondents were, the more likely they felt CRP was widespread and not justified. The authors also discuss the implications of these findings and present some future directions for CRP research.     

The perceived employability of ex-prisoners and offenders

A large-scale study was conducted to examine the perceived employability of ex-prisoners and offenders. Four participant groups comprising 596 (50.4%) employers, 234 (19.8%) employment service workers, 176 (14.9%) corrections workers, and 175 (14.8%) prisoners and offenders completed a questionnaire assessing the likelihood of a hypothetical job seeker's both obtaining and maintaining employment; the importance of specific skills and characteristics to employability; and the likelihood that ex-prisoners, offenders, and the general workforce exhibit these skills and characteristics. Apart from people with an intellectual or psychiatric disability, those with a criminal background were rated as being less likely than other disadvantaged groups to obtain and maintain employment. In addition, ex-prisoners were rated as being less likely than offenders and the general workforce to exhibit the skills and characteristics relevant to employability. Implications for the preparation and support of ex-prisoners and offenders into employment are discussed, together with broader community-wide initiatives to promote reintegration.     

DNA profiling of trace DNA recovered from bedding

Trace DNA is often detected on handled items and worn clothing examined in forensic laboratories. In this study, the potential transfer of trace DNA to bedding by normal contact, when an individual sleeps in a bed, is examined. Volunteers slept one night on a new, lower bed sheet in their own bed and one night in a bed foreign to them. Samples from the sheets were collected and analysed by DNA profiling. The results indicate that the DNA profile of an individual can be obtained from bedding after one night of sleeping in a bed. The DNA profile of the owner of the bed could also be detected in the foreign bed experiments. Since mixed DNA profiles can be obtained from trace DNA on bedding, caution should be exercised when drawing conclusions from DNA profiling results obtained from such samples. This transfer may have important repercussions in sexual assault investigations.     

Believing is seeing II: Beliefs and perceptions of criminal psychological profiles

This study built upon previous research by Kocsis and Hayes (2004) by investigating whether a bias exhibited by police officers in their perception of profiles would replicate in a sample of nonpolice participants. Additionally, the relationship, if any, between the degree of belief harbored by an individual concerning the merits of profiling and their perceptions of a given profile was also investigated. The findings of this study add to the contention that the biases observed in Kocsis and Hayes's previous study with regard to author label may be related to some intrinsic feature of the previously sampled police participants. Additionally, evidence was found to support the proposition that an individual's degree of belief in profiling is related to their perceptions concerning the merits of a profile. Namely, the more an individual believes in the profiling technique, the greater the merit that will be perceived in a profile.     

Theory and racial profiling: Shortcomings and future directions in research

The volatile political environment that surrounds the issue of “racial profiling” has led local and state police agencies across the nation to start collecting information about traffic and pedestrian stops. The controversy over this issue is overwhelmed by the unsupported assumption that all race-based decision making by police officers is motivated by individual police officers' racial prejudice. This article reviews recently published studies on racial profiling and critiques both their methods and conclusions. Using the conceptual framework for police research presented by Bernard and Engel, it reviews a number of theories that may explain racial disparities in the rates of police stops. The authors argue that to explain police behavior better, theoretical models must guide future data collection efforts.     

Working with law students to develop legal literacy materials

This paper sets out the findings of a teaching development project undertaken with undergraduate law students at the University of Leicester (UOL) in 2013–2014, funded by the Higher Education Academy (HEA). In the course of this project, students were actively involved in the design, development and delivery of five interactive workshops for primary school children, each built around a particular theme and each designed to help develop an aspect of the children’s legal literacy. The aims were to assess the impact on the learning experience of student participants; to assess whether it may be possible to incorporate this form of activity within the undergraduate curriculum and to assess whether it may be possible to create a sustainable model for use in the future, with new groups of students and a wider number of schools. The most positive outcomes of the project relate to the students’ self-reporting of the development of transferable skills and their reported increase in self-confidence, as a result of being involved in the project. The role of group work in the development of transferable skills is also evident. By far the weakest area was the demonstration and development of legal research skills. The authors reflect on these findings, and comment on some of the unforeseen benefits and challenges of the project, before drawing conclusions as to its future viability.     

Calibrating the perceived strength of evidence of forensic testimony statements

Pattern comparison disciplines use categorical statements to express conclusions. We measured the strength of evidence for six different scales as perceived by members of the general public and fingerprint examiners. The statements came from different types of scales, and included categorical conclusions, likelihoods, strength of support statements, and random match probabilities. We used an online interface that required participants to first correctly sort the statements in a given conclusion scale, and then place each statement on a single evidence axis that ranged from most support imaginable for same source to most support imaginable for different sources. We analyzed the data using both the raw values and a Thurstone–Mosteller model based on ordinal values. We found systematic differences between examiners and members of the general public, such that examiners distinguished between Identification and Extremely Strong Support for Common Source, while members of the general public did not. Statements that included numerical values tended to be placed lower than categorical conclusions, and members of the general public tended to place the highest categorical conclusion in each scale at the very top of the evidence axis. The results suggest that laypersons can distinguish between statements meant to represent moderate vs strong evidence, but tend to place categorical conclusions above statements that involve numerical values.     

An evaluation of a group treatment approach for children who have witnessed wife abuse

The present study evaluated a time-limited group treatment program developed by Jaffe et al.(1986) for child witnesses of wife abuse. The sample of children between the ages of 8–13 years, in both the treatment and control groups, was referred by agencies in the community. The evaluation based on the Child Witness to Violence Questionnaire, measured three variables: attitudes and responses to anger, knowledge of support and safety skills, and sense of responsibility for the parents and for the violence. An analysis of covariance of the pretreatment/posttreatment data showed significant differences on the first and third variables: attitudes and responses to anger, and sense of responsibility for the parents and violence measured. The second variable, safety and support skills, showed no significant difference between groups. Consideration was given to additional findings, limitations of the study, and recommendations for program change.     

用ESI-TOF-MS分型技术检测线粒体DNA高变区碱基组成的多态性

目的 用ESI-TOF-MS分型技术检测线粒体DNA的D环高变区,通过碱基组成分析其多态性.方法 在PLEX-ID技术平台上,分别对mtDNA高变区1(HVⅠ,15924-16428nt)和mtDNA高变区Ⅱ(HVⅡ,31-576 nt)进行碱基组成分析,考察mtDNA在华东汉族人群的多态性,并将该技术应用于一例特殊的亲子鉴定案件.结果 用ESI-TOF-MS分型技术检测线粒体DNA,在高变区Ⅰ的8个区段检见碱基组成的多态性,在mtDNA高变区Ⅱ的10个区段检见多态性.在所应用的亲子鉴定案例中,线粒体DNA标记成了常染色体STR基因座的重要补充,经高变区Ⅰ和高变区Ⅱ的碱基组成检测,最后排除了非母.结论 ESI-TOF-MS检测mtDNA的技术具有良好的应用前景,在一些特殊的案件中,该法可为最终获得可靠鉴定结论提供技术支撑.     

The limits of privacy in automated profiling and data mining

Automated profiling of groups and individuals is a common practice in our information society. The increasing possibilities of data mining significantly enhance the abilities to carry out such profiling. Depending on its application, profiling and data mining may cause particular risks such as discrimination, de-individualisation and information asymmetries. In this article we provide an overview of the risks associated with data mining and the strategies that have been proposed over the years to mitigate these risks. From there we shall examine whether current safeguards that are mainly based on privacy and data protection law (such as data minimisation and data exclusion) are sufficient. Based on these findings we shall suggest alternative policy options and regulatory instruments for dealing with the risks of data mining, integrating ideas from the field of computer science and that of law and ethics.     

Comparative Analysis of the Chemical Profiles of 3,4-Methylenedioxymethamphetamine Based on Comprehensive Two-Dimensional Gas Chromatography-Time-of-Flight Mass Spectrometry (GC × GC-TOFMS)*

Abstract: The chemical profiling of illicit drugs is an important analytical tool to support the work of investigating and law enforcement authorities. In our work, comprehensive two‐dimensional gas chromatography–time‐of‐flight mass spectrometry (GC × GC‐TOFMS) combined with nontargeted, pixel‐based data analysis was adapted for the chemical profiling of 3,4‐methylenedioxymethamphetamine (MDMA). The validity and benefit of this approach was evaluated by analyzing a well‐investigated set of MDMA samples. Samples were prepared according to a harmonized extraction protocol to ensure the comparability of the chemical signatures. The nontargeted approach comprises preprocessing followed by analysis of variances as a fast filter algorithm for selection of a variable subset followed by partial least squares discriminant analysis for reduction to promising marker compounds for discrimination of the samples according to their chemical profile. Forty‐seven potential marker compounds were determined, covering most of the target impurities known from the harmonized one‐dimensional profiling as well as other compounds not previously elucidated.     

Virtual reality for teaching and learning in crime scene investigation

Simulated crime scene investigation is an essential component of forensic science education, but its implementation is costly and poses challenges to accessibility; offering personal investigations in higher education scenarios is often impossible. Virtual reality (VR) is an emerging technology which offers exciting prospects for teaching and learning, especially for imparting practical skills. We document here a multidisciplinary experimental study in which a bespoke VR crime scene app was designed and implemented, after which it was tested by both undergraduate student and staff/postgraduate student cohorts. Through both qualitative and quantitative analyses, we demonstrate that VR applications support learning of practical crime scene processing skills. VR-based practical sessions have the potential to add value to forensic science courses, through offering cost-effective practical experience, the ability to work in isolation and in a variety of different scenarios. Both user groups reported high levels of satisfaction with using the app and reports of adverse effects (motion sickness) were minimal. With reference to user feedback, we proceed to evaluate the scalability and development challenges associated with large-scale implementation of VR as an adjunct to forensic science education.     

Evaluation of police recruit training involving psychology

Abstract

Claims have been made that critical thinking is a necessary skill for constructing accurate offender profiles. However, in studies purporting to demonstrate this, critical thinking ability amongst participants has never been adequately assessed, making it impossible to draw any valid conclusions about the importance of this skill for profiling. In order to empirically examine the relationship between critical thinking ability and profile accuracy, participants (n=36) in the current study completed a mock profiling exercise and the Watson–Glaser Critical Thinking Appraisal – Form S (WGCTA-S). Profile accuracy scores were calculated for each participant and correlated with his or her scores on the WGCTA-S. Although the majority of participants were found to be adequate critical thinkers, no significant relationship was found between critical thinking ability and profile accuracy. Potential explanations for this finding are discussed.     

A tale of two states: how U.S. state legislatures consider restorative justice policies

This paper explores recent state legislative processes in Colorado and Texas related to bills proposing support for restorative justice as a juvenile diversion tool for criminal courts. It uses two maximum variation case studies to explore issue statements related to theoretically-supported factors likely to influence the adoption of restorative justice legislation, and draws conclusions about the importance of political partisanship, economic strain, and key figures such as policy entrepreneurs, advocacy coalitions, and interest groups in legislative decision-making. Emerging themes suggest that support for restorative justice policies is at least sometimes bipartisan and is unlikely to be motivated by economic interests. Collaborative processes within a traditionally adversarial system distinguished successful restorative justice decision-making in Colorado.     

Psychological profiling of sexual murders: an empirical model

Psychological profiling represents the investigative technique of analyzing crime behaviors for the identification of probable offender characteristics. Profiling has progressively been incorporated into police procedures despite a surprising lack of empirical research to support its validity. Indeed, in the study of sexual murder for the purpose of profiling, very few quantitative, academically reviewed studies exist. This article reports on the results of a 4-year study into Australian sexual murders for the development of psychological profiling. The study involved 85 cases of sexual murder sampled from all Australian police jurisdictions. The statistical procedure of multidimensional scaling was employed. This analysis produced a five-cluster model of sexual murder behavior. First, a central cluster of behaviors was identified that represents common behaviors to all patterns of sexual murder. Next, four distinct outlying patterns--predator, fury, perversion, and rape--were identified that each demonstrated distinct offense styles. Further analysis of these patterns also identified distinct offender characteristics that allow for the use of empirically robust offender profiles in future sexual murder investigations.