Defining Escalation Pattern Analysis (EPA): Behavioral Trajectories and Early Lethality Indicators in Intimate Partner Violence (IPV)

Escalation Pattern Analysis (EPA) is a multidimensional risk and lethality assessment framework that identifies early indicators of intimate partner violence (IPV) progression by analyzing behavioral trajectories rather than isolated incidents. Drawing on coercive control theory, feminist criminology, femicide timeline research, danger assessment literature, and behavioral threat assessment, EPA conceptualizes escalation along three axes: Frequency, Intensity, and Inhibitory Decline. Each axis is scored on a 0–5 scale, enabling practitioners to identify shifts in recurrence, severity, and inhibitory control that collectively signal increasing lethality risk. EPA also accounts for situational accelerants, including separation, police involvement, and perceived loss of control, which can trigger abrupt escalation across axes. This framework addresses the limitations of traditional incident-based tools by capturing dynamic behavioral momentum and identifying dangerous trajectories earlier in the cycle of violence. EPA thus provides a structured, empirically grounded method for improving risk and threat detection, supporting multi-agency decision-making, and preventing high-harm and lethal violence.