Profiling Killers: A Revised Classification Model for Understanding Sexual Murder

  title={Profiling Killers: A Revised Classification Model for Understanding Sexual Murder},
  author={Robert D. Keppel and Richard G. Walter},
  journal={International Journal of Offender Therapy and Comparative Criminology},
  pages={417 - 437}
  • R. Keppel, R. Walter
  • Published 1 December 1999
  • Psychology
  • International Journal of Offender Therapy and Comparative Criminology
Generally, murder classifications have failed to be useful for investigators in identifying perpetrators of murders. Based on the experience of the authors, this article extends the definitions of four previously recognized rape-offender typologies (power-assertive, power- reassurance, anger-retaliatory, and anger-excitation) into classifications for sexually oriented killers. These types of murderers and their crime scenes are described through the dynamics of their behaviors, homicidal… 

Tables from this paper

Classifying Serial Sexual Murder/Murderers

Keppel and Walter’s (1999) classification system for serial sexual murder/murderers is sometimes used as the basis for generating offender profiles despite the fact that it has yet to be empirically

Revisiting the anger/sadistic typology of sexual homicide

PurposeThe anger/sadistic model is one of several typologies proposed for sexual homicide events. This paper aims to empirically test this model by examining sexual homicide cases. Empirically

Body Disposal Patterns of Sexual Murderers: Implications for Offender Profiling

Offender profiling postulates that crime scene behavior should predict certain offender characteristics. The aim of this study is to investigate the relationship between offender characteristics,

Testing Existing Classifications of Serial Murder Considering Gender: An Exploratory Analysis of Solo Female Serial Murderers

Serial murder is a genre of crime that has received a great deal of media and academic attention, yet, serial murder committed by women has only begun to garner a portion of this attention within the

Psychological Profiling of Offender Characteristics from Crime Behaviors in Serial Rape Offences

A central cluster of behaviors were identified that represent common behaviors to all patterns of serial rape and identified distinct offender characteristics that allow for the use of empirically robust offender profiles in future serial rape investigations.

Weapons used by juveniles and adult offenders in sexual homicides: An empirical analysis of 29 years of US data

Most studies of sexual murderers consist of small samples made up of primarily adult offenders. Accordingly, little is known about similarities and differences between juvenile (under 18) and adult

Parricide: An Analysis of Offender Characteristics and Crime Scene Behaviorsof Adult and Juvenile Offenders

Researchers of parricide have often concentrated on the characteristics of the offenders. However, research which has empirically documented the link between offender's characteristics and crime

The continuum of sexual aggression : discriminating between sexual murderers and rapists

The study of sexual homicide has been of interest to clinicians for over a century without any clear consensus on its causes. Consequently, it remains problematic to accurately assess and treat

An investigation into sexual killing : considerations for assessment, understanding motivation and future research

Objective: This thesis reports an investigation into characteristics of sexual killers and their offences. Sexual killing was defined where there was a disclosure by the perpetrator that the killing



Crime Classification Manual

This text classifies the three major felonies - murder, arson, and sexual assault - based on the motivation of the offender, standardizing in one place the language and terminology used throughout

Signature murders: a report of several related cases.

  • R. Keppel
  • Psychology
    Journal of forensic sciences
  • 1995
Three female patrons of singles bars were murdered in separate events in Bellevue, Washington in 1990 within sixty-seven days of each other. An evaluation of those murders revealed that all the

The sexually sadistic serial killer.

Characteristics and crime scene behavior of 20 sexually sadistic serial murderers are explored, i.e., the execution of murders that are well-planned, the use of preselected locations, captivity, a variety of painful sexual acts, sexual bondage, intentional torture, and death by means of strangulation and stabbing.

Rape: power, anger, and sexuality.

The authors ranked accounts from 133 offenders and 92 victims for the dominant issue and found that the offenses could be categorized as power rape (sexuality used primarily to express power) or anger rape (use of sexuality to express anger).

Practical Homicide Investigation Tactics, Procedures, and Forensic Techniques

CONTENTS: The Homicide Crime Scene. First Officer's Duties. First Officer's Duties: Specific. Preliminary Investigation at the Scene: The Detectives. Specific Investigative Duties. The Crime Scene

Antisocial personality disorder, sexual sadism, malignant narcissism, and serial murder.

The research on serial murder and its relationship to antisocial personality disorder and sexual sadism is examined and the concept of malignant narcissism is discussed.

Time and Distance as Solvability Factors in Murder Cases

There is no empirical research on solvability factors in murder investigations. This paper analyzes data collected in the first study to provide such, focusing specifically on the extent to which

Practical aspects of rape investigation : a multidisciplinary approach

Emphasizes the collaborative roles of investigators, health care professionals and prosecuters in the case of the rape victim and the apprehension and conviction of the rapist.

Sex, Motivation, and the Criminal Offender