Organised vs Disorganised Typology
Definition
The BSU classification of sexually motivated murderers based on planning, victim selection, scene control, and evidence removal; original binary; later refined to a spectrum in the Crime Classification Manual.
- Applies to
- Sexually motivated murderers
- Origin
- FBI Behavioral Science Unit
- Basis
- Planning, victim selection, scene control, evidence removal
- Later revision
- Refined to a spectrum in the Crime Classification Manual
Common questions
How does this typology differ from the general organised-offender concept applied across all crime types?+
This version was developed specifically from interviews with incarcerated sexual homicide offenders and is tied to indicators unique to that crime type, such as victim selection method and evidence of sexual assault staging, whereas the general organised-offender concept is applied more broadly across offence categories.
What criticism has this typology faced from academic researchers?+
Researchers, notably in investigative psychology, have questioned the small and non-representative sample the original typology was built on, arguing that real offenders show mixed organised and disorganised traits rather than falling cleanly into one category, which is part of why the FBI itself later moved to a spectrum model.
Related terms
- Behavioral Analysis Unit (BAU)
- The FBI unit, descended from the BSU, that provides behavioural evidence analysis support to homicide, sexual assault, terrorism, and threat-assessment investigations in...
- Criminal Investigative Analysis (CIA)
- The FBI BSU's formal method for profiling unknown offenders from crime-scene evidence, involving a structured analytical process that produces an offender description...
- ENFSI IP Working Group
- The European Network of Forensic Science Institutes Investigative Psychology Working Group, which sets standards for behavioural analysis practice across EU member states,...
- Equivocal Forensic Analysis
- The first stage of Behavioral Evidence Analysis (BEA), in which the analyst reviews all physical evidence without assumption about the offender to...
- Investigative Psychology
- David Canter's empirically grounded approach to behavioural analysis, using multivariate statistical methods and systematic case comparison rather than clinical inference from interview-based...
- ViCAP
- The FBI's Violent Criminal Apprehension Program, a national database established in 1985 for the comparison and linkage of violent crime cases across...