# One Size Doesn’t Fit All: An Exploratory Typological Approach to Understanding Criminal Career Heterogeneity in Intimate Partner Homicide

## TL;DR

This study explores different criminal patterns of individuals who commit intimate partner homicide to better understand their behaviors and interactions with law enforcement.

## Contribution

The study identifies five distinct criminal profiles of intimate partner homicide perpetrators using latent profile analysis.

## Key findings

- Five distinct profiles of IPH perpetrators were identified, including one-time and high-volume violence types.
- External validity of these profiles was confirmed using criminal, contextual, and situational variables.
- The findings suggest implications for justice system practices and challenges in handling IPH cases.

## Abstract

Approximately one in seven homicides globally is committed by a partner within an intimate relationship. While criminology research on intimate partner homicide (IPH) perpetrators is extensive, their interactions with law enforcement remain underexplored. This study examines the criminal trajectories of IPH perpetrators to ascertain whether they exhibit common or diverse patterns. Utilizing data from Quebec’s official criminal events database, the study analyzes variables concerning the criminal histories of 1,780 individuals involved in attempted or completed IPH through latent profile analysis. Findings indicate five distinct profiles among IPH perpetrators: one-time, low-volume intimate partner violence (IPV), moderate-volume IPV, high-volume violence, and high-volume polymorphous perpetrators. The external validity of these profiles is assessed using additional criminal career, contextual, and situational variables. Implications for the justice system’s practices and challenges are also discussed.