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Differentiating stranger murders: profiling offender characteristics from behavioral styles
1Centre for Investigative Psychology, Eleanor Rathbone Building, University of Liverpool, Liverpool, L69 7ZA, UK. gaby@liverpool.ac.uk
Behavioral Sciences & the Law
|September 11, 1999
Summary
This study on offender profiling reveals distinct homicide styles linked to offender characteristics. Crime scene analysis can help law enforcement infer details about stranger murderers.
Area of Science:
- Criminology
- Forensic Psychology
- Behavioral Science
Background:
- Offender profiling literature suggests homicide styles correlate with offender background.
- Aggression studies indicate stylistic distinctions in the role of aggression within offenses.
Purpose of the Study:
- To test the hypothesis that distinct homicide styles reflect offender characteristics.
- To identify crime scene indicators that differentiate between instrumental and expressive aggression in murders.
- To link crime scene themes to offenders' interpersonal transaction styles.
Main Methods:
- Multidimensional Scaling (MDS) analysis was employed.
- Data comprised crime scene and offender characteristics from 82 stranger homicides.
- Analysis focused on single offender, single victim cases.
Main Results:
- A multivariate structure emerged, identifying three hypothesized homicide styles.
- 65% of cases were uniquely assigned to a style, with 36% fitting hybrid styles.
- Offender characteristics correlated significantly with identified crime scene styles.
Conclusions:
- Crime scene styles provide a basis for inferring offender characteristics in stranger murders.
- The findings support the utility of offender profiling in investigations.
- Distinctions in crime scene indicators, particularly cognitive actions, are key to understanding homicide styles.