Serial killers: II. Development,dynamics, and forensics

Part I of this two-part article described the demographics, patterns, typologies, and motives of different subtypes of serial killers. Part II describes the development of the serial killer's drives and offense patterns. It discusses the brain mechanisms and dysfunctions that have been purported to underlie this type of extreme crime, as well as the cognitive, psychodynamic, and sociocultural factors that contribute to the development of the serial killer's relentless quest for victims. The article then discusses the practical forensic aspects of theories and knowledge about serial killers, specifically, the efficacy of behavioral profiling of offenders and the relevance of the insanity defense to serial killer cases.     

Riddles in serial murder: A synthesis

This article blends the conclusions of four former law enforcement personnel who have investigated and apprehended serial killers, with pertinent principles derived primarily from the field of psychoanalysis. The four—John Douglas, Roy Hazelwood, Robert Keppel, and Robert Ressler—have written extensively about their investigations of serial killers. In their writings, they have answered many questions about the personality development of serial killers while leaving other questions only partially answered. This article expands the answers to three fundamental questions: What is the origin of the dynamics of serial killing? Why is the aggressive drive so singularly powerful and persistent in serial killers? Why is it that serial killers often reveal their identities to the police? In answering these three riddles, the contributions of four emotional pillars in the personality of killers are emphasized. The pillars include emotional hunger, anxiety and aggression, eroticism, and conscience structure. At times, these pillars merge and drive murderous behavior but the pillars lack the integration needed for healthy personality development. This synthesis offers a fuller understanding of the psychodynamics involved in serial killings.     

Of Monsters and Men: Exploring Serial Murderers’ Discourses of Neutralization

Techniques of neutralization are used by petty and serious criminals to verbally account for their behavior, mitigate responsibility, and socially construct identity. Since serial killers often appear “normal” while simultaneously killing, neutralizations may provide the process by which serial killers “drift” between conventional societal attachments and murder. These neutralizations may also function as a form of stigma management, as it does for other offenders, assisting in the maintenance of a positive presentation of self. To explore these propositions, a content analysis of narratives and case histories was used to examine serial murderers’ accounts to determine if neutralizations were offered, and if so, the implications of this theory as a general (or universal) theory of crime.     

The Role of Sexual,Sadistic, and Misogynistic Fantasy in Mass and Serial Killing

A subset of violent criminals fixates on deviant (and often grossly misogynistic) sexual fantasies, or engages in sexually sadistic behavior toward victims. Although the role of psychosexual deviancy is quite common among many notorious serial killers (e.g., Ted Bundy, Gary Ridgway, Dennis Rader), it appears to be a motivating factor for some recent mass killers as well. Evidence indicates that the killer’s psychosexual issues were a motivating factor for mass killers (e.g., George Sodini, Jared Lee Loughner, and Elliot Rodger) in their assault. This article will compare and contrast the role and influence of a deviant sexual/misogynistic fantasy formation process for mass and serial killers.     

Crime location choices: A geographical analysis of German serial killers

The present study examined whether there are different processes operating in the crime location choices between body‐disposing and non‐body‐disposing serial killers and between sexual serial killers and acquisitive serial killers. A sample of 49 series of solved German serial killings is used to examine the differences in travelled distances between these groups of killers. Nonparametric tests revealed that body‐disposing and non‐body‐disposing serial killers and sexual and acquisitive serial killers did not constitute subgroups of serial killers regarding their spatial behaviour. The results suggest that the compared groups are subjected to the same factors that influence their travelled distances. Furthermore, the possible role of planning and anticipated emotions in crime location choices of serial killers is discussed, as well as the limitations of the study and recommendations for future research.     

Healthcare Serial Killers as Confidence Men

Although there is adequate coverage of serial murder in the extant homicide literature, there is a lack of systematic examination of healthcare professionals who serially murder their patients. Using a sample of 58 healthcare serial killers located within North America, South America, and Europe between the years of 1970 and 2010, this study examines notable pre‐offense and post‐offense behaviours of healthcare serial killers. Patterns related to offender aetiology, victim cultivation, crime scene behaviour, and techniques of evasion were explored. The findings from this study suggest that the pre‐offense and post‐offense behaviours of healthcare serial killers can be conceptualised from the theoretical framework of confidence men or ‘con men’. The findings from this study also suggest that healthcare serial killings and offenders who perpetrate them continue to be elusive and warrant additional scholarly attention to reduce their likelihood of engaging in homicide undetected for extended time. Policy implications are also discussed. Copyright © 2013 John Wiley & Sons, Ltd.     

Spatial patterns of serial murder: an analysis of disposal site location choice

Although the murders committed by serial killers may not be considered rational, there is growing evidence that the locations in which they commit their crimes may be guided by an implicit, if limited rationality. The hypothesized logic of disposal site choice of serial killers led to predictions that (a) their criminal domains would be around their home base and relate to familiar travel distances, (b) they would have a size that was characteristic of each offender, (c) the distribution would be biased towards other non-criminal activities, and (d) the size of the domains would increase over time. Examination of the geographical distribution of the sites at which 126 US and 29 UK serial killers disposed of their victims' bodies supported all four hypotheses. It was found that rational choice and routine activity models of criminal behavior could explain the spatial choices of serial murderers. It was concluded that the locations at which serial killers dispose of their victims' bodies reflect the inherent logic of the choices that underlie their predatory activities.     

Serial murder in America: case studies of seven offenders

This article summarizes and compares information on seven interviewed serial killers in an ongoing project designed to study similarities and differences among these individuals. The aim of this article is to increase our collective knowledge of the dynamics of serial murder by examining the perpetrators' backgrounds, as well as the unique ways in which they view themselves and the world around them. Although qualitative interview research alone is not sufficient to fully understand such behavior, it is useful in many ways. Some of the information discussed based on the seven offenders interviewed is compared with broader epidemiological studies, and the strengths and limitations of each type of research are discussed.     

Representation of the serial killer on the Italian Internet.

The representation of serial killers was examined from the analysis of 317 Web pages in the Italian language to study how the psychological profiles of serial killers are described on the Italian Internet. The correspondence analysis of the content of these Web pages shows that in Italy the serial killer is associated with words such as "monster" and "horror," which suggest and imply psychological perversion and aberrant acts. These traits are peculiar for the Italian scenario.     

The behavioral bases of prolonged suppression of predatory attack in cats

The behavioral differences between rat-killing cats and non-rat killers were investigated. Killers and non-killers were found to fall at opposite ends of a continuum of predisposition to respond defensively to a variety of environmental threats. Non-killers were most defensive, displaying aggressive-defensive predatory attacks in contrast to the aggressive attacks of killers. The data support the hypothesis that suppression of killing among non-rat killers is the result of an enhanced sensitivity to external threat.     

Pharmacological antagonism of mouse-killing behavior in the olfactory bulb lesion-induced killer rat

Representative agents from all of the major classes of drugs that have been reported to be selective antagonists of spontaneous mouse-killing behavior (i.e., antidepres-sants, antihistamines, anticholinergics, and stimulants) were tested for their ability to antagonize the mouse-killing response in rats that became killers following removal of the olfactory bulbs (O.B. lesion-induced killer rat) and in spontaneous killers. All of the drugs tested selectively antagonized the killing behavior of both spontaneous and lesion-induced mouse-killing rats. Several drugs (i.e., imipramine, amitriptyline, d-amphetamine, and chlorpheniramine) were found to be significantly less potent antagonists of mouse killing in the 0.6. lesioned rat as compared to spontaneous killers. Since all of the drugs that exhibited significant differences in activity between the two models have been shown to possess the ability to elevate norepinephrine levels at receptor sites in the brain, alterations in noradrenergic systems may account for the differences in sensitivity that were observed in this study. The possibility that there may be a common neural substrate for mouse killing in the two models is discussed.     

Cluster Analysis Examination of Serial Killer Profiling Categories: A Bottom‐Up Approach

Two studies explored the validity of dichotomous classification of organised/disorganised serial killers and the four typologies (visionary, mission, hedonistic, and power/control) adopted by the Federal Bureau of Investigation (FBI). Tables documenting crime scene criteria were devised consisting of 50 typifying different crime scenes (Study 1) and 48 crime scenes (taken from the 50 crime scene criteria) with a further 10 motive‐based crime scene criteria (Study 2). Adopting content analysis, crime scenes depicted for 40 (Study 1) and 40 (Study 2) serial killers using secondary sources of data were dichotomously coded for the presence or absence of the crime scene criteria. These data were inputted for agglomerative hierarchical cluster using Ward's method as the clustering algorithm. Differences in the nature of clusters were found for male and female serial killers; however, there was no empirical support for the organised/disorganised classifications or the four typologies. The ‘bottom‐up’ approach resulted in clusters from the different crime scene criteria that helped to understand how these criteria were associated within the serial killer cohort considered. It is concluded that the resulting clusters in both studies support the notion of there being an underlying organised element to most serial murder and that serial murders differ according to the nature of disorganised crime scene criteria present. Copyright © 2011 John Wiley & Sons, Ltd.     

Introduction: Special Issue on Spirituality and Adult Development, Part I

This article describes the purpose of the 3-part Special Issue on Spirituality and Adult Development, and the contents of Part I. Developing individuals express their belief that spirituality plays a key role in their development, yet developmental psychologists have given comparatively little attention to this factor. The concept of spirituality is seldom considered separately from that of religion. The purpose of this Special Issue is to begin to remedy this neglect. This introduction is a summary of the 6 empirical and theoretical articles that form Part I.     

Serial murder and the case of Aileen Wuornos: attachment theory, psychopathy, and predatory aggression

The extant research on female homicide has yet to offer any systematic assessment of why women murder serially. Part of the explanation is attributed to existing literature focusing on justifiable and excusable homicide, or women who kill their abusive partners because they have been battered, fear that their lives are in danger, or are otherwise victimized. Thus, predatory homicide perpetrated by women has not received extensive attention in the relevant literature. This article aims to address this deficiency by providing a detailed case study analysis of Aileen Wuornos, a convicted serial murderer executed at Broward Correctional Institution in Pembroke Pines, FL, on October 9, 2002. By linking the literature on attachment theory with the research on psychopathy and predatory aggression, this article argues that Aileen Wuornos was a cold blooded and calculated killer: a serial offender responsible for her delinquent and criminal behavior. Generalizing from the case of Aileen Wuornos, several tentative recommendations are proposed as linked to clinical and forensic prevention, diagnosis, and treatment, as well as future research on women, psychopathy, and predatory serial homicide.     

Geographical offender profiling: Dragnet's applicability on a Brazilian sample

Even though geographical offender profiling is already widely used and researched in countries such as England, Canada, and United States, it is still severely overlooked in Brazil, as there are no researches on the subject using a Brazilian sample. Therefore, the present paper aims to start filling this gap by analysing the applicability of the geographical offender profiling and Dragnet on a sample of Brazilian serial killers. In order to achieve this objective, the authors collected data through police records on 15 serial killers that were active between June 2009 and June 2015, in the city of Campina Grande, Paraíba, Brazil. As a result, the circle hypothesis was confirmed, considering that 66.7% of the sample fell into the marauder category. Interestingly, the Dragnet's result accurately informed the area that contained the offender's base in the same cases in which the offender acted according to the marauder model. Also, other important correlations were found such as the influence of age, intelligence, resourcefulness, and method of approach on the distance travelled to commit a murder. Those results show that the geographical offender profiling can be effectively applied in Brazil and thus is a valid investigative tool to aid police officers in serial crimes investigations.     

Family Survivors of Homicide: I. Symptoms,Syndromes, and Reaction Patterns

As more and more mental health clinicians become involved in the criminal justice system, family therapists will see increasing numbers of crime victims in their caseloads, and some of these families will have lost loved ones to murder. Part I of this two-part article describes the common and atypical symptoms, syndromes, and reaction patterns shown by families who have experienced the murder of a loved one. Part II will present a practical model for treating family survivors of homicide that incorporates cognitive-behavioral, psychodynamic, family systems, and existential components. Throughout, the emphasis is on therapists being equipped with a sufficiently broad range of clinical tools to treat these survivors flexibly, effectively, competently, and compassionately.     

In Search of the ‘Angels of Death’: Conceptualising the Contemporary Nurse Healthcare Serial Killer

Focusing specifically upon nurses who commit serial murder within a hospital setting, this paper aims to establish insights into this particular subcategory of healthcare serial killer. In addition, the paper aims to test the usefulness of an existing checklist of behaviours among this group of serial murderers. Drawing upon existing lists of healthcare serial killers produced by other scholars as well as legal records and an online news archive, we identified and researched healthcare serial killer nurses, collating socio demographic and criminological data and applying the aforementioned checklist to each case. Our findings suggest that to date, the label ‘healthcare serial killer’ has been applied in too loose a manner, making the understanding of this phenomenon problematic. In further refining the definition and identifying the socio‐demographic and criminological characteristics of the victims, perpetrators and crimes, we have developed more specific and therefore useful insights for practitioners and identified a potentially useful checklist which, with revisions, could contribute towards preventative strategies and interventions. Copyright © 2014 John Wiley & Sons, Ltd.     

Neurodevelopmental and psychosocial risk factors in serial killers and mass murderers

Multiple and serial murders are rare events that have a very profound societal impact. We have conducted a systematic review, following PRISMA guidelines, of both the peer reviewed literature and of journalistic and legal sources regarding mass and serial killings. Our findings tentatively indicate that these extreme forms of violence may be a result of a highly complex interaction of biological, psychological and sociological factors and that, potentially, a significant proportion of mass or serial killers may have had neurodevelopmental disorders such as autism spectrum disorder or head injury. Research into multiple and serial murders is in its infancy: there is a lack of rigorous studies and most of the literature is anecdotal and speculative. Specific future study of the potential role of neurodevelopmental disorders in multiple and serial murders is warranted and, due to the rarity of these events, innovative research techniques may be required.     

Drug treatment and workplace drug testing: Politics,symbolism and organizational dilemmas

This article explains how the link between drug testing and drug treatment was forged, how it has been implemented in the workplace, and speculates on its organizational implications. Part I argues that widespread drug testing in the core institutions of American society would not have been politically possible without forging an explicit link to drug treatment. The authors identify the key variables which account for the link between testing and treatment, including public opinion, employer self interest, collective bargaining agreements, the precedent and influence of Employee Assistance Programs, and developments in the law of the workplace. Part II describes how the link between drug testing and drug treatment has been implemented in the workplace, including the emergence of new organizational units, roles, and inter-organizational relationships. Part III examines the organizational dilemmas created by the testing/treatment linkage.     

Effects of ethanol withdrawal on muricidal behavior

When naive rats of our colony were individually housed for 1 month with free access to laboratory chow and water as drinking fluid, 6% exhibited muricidal behavior. When naive rats of the same colony were similarly housed but received ethanol 20% in water as the sole source of drinking fluid (ll.5 g ethanol/kg/day), the percentage of killer rats was the same. However, when the rats were housed in similar conditions and submitted to a 1-day ethanol withdrawal, the percentage of muricidal rats increased to 25%. Ethanol intake in the same conditions as described above did not change muricidal behavior of spontaneous killers and did not induce killing behavior in nonkiller animals. GABA-mimetic agents administered IP blocked ethanol withdrawal-induced killing behavior as well as spontaneous muricidal activity.