Behavioural Distinctiveness
Definition
The property that the consistent behaviours in question are rare enough across unrelated offenders that shared possession of them cannot easily be attributed to coincidence; the second necessary condition for linkage inference.
Related terms
- Behavioural Consistency
- The tendency of a serial offender to repeat the same distinctive behaviours across multiple offences; one of the two necessary conditions for...
- Linkage Analysis
- The investigative and forensic method of determining whether two or more crimes were committed by the same person, based on the presence...
- Modus Operandi (MO)
- The functional, learned behaviours the offender uses to commit the offence: how to gain entry, control the victim, complete the act, and...
- ROC / AUC Analysis
- Receiver Operating Characteristic / Area Under the Curve analysis; the statistical method used to measure the discriminative accuracy of a linkage system,...
- Signature
- Psychologically expressive behaviours that go beyond what's needed to complete the offence: posing the body, ritual acts, taking trophies, leaving messages. Signature...
- ViCLAS
- Violent Crime Linkage Analysis System; the RCMP-developed database capturing 168 behavioural and physical fields from serious violent crimes in Canada and adopted...
Explained in
- Serial-Offending Linkage Analysis and Modus OperandiThe property that the consistent behaviours in question are rare enough across unrelated offenders that shared possession of them cannot easily be attributed t...