Anatomical location of non-suicidal self-injury: A latent class analysis of functional, cognitive, and behavioural profiles of people who self-injure

Key findings from this study

This research indicates that:

• anatomical location of self-injury correlates with distinct patterns of reinforcement functions and outcome expectancies
• injury frequency and method vary systematically across anatomical location profiles
• location-based classification captures clinically relevant heterogeneity not captured by conventional NSSI categories

Overview

Latent class analysis identified distinct profiles of non-suicidal self-injury (NSSI) organized by anatomical location. The analysis revealed meaningful differences in functional motivations, cognitive expectancies, behavioral frequency, and injury methods across these location-based profiles. Anatomical location emerged as a clinically and theoretically relevant organizing principle for NSSI presentations.

Methods and approach

The study employed latent class analysis to examine associations between anatomical location of NSSI and profiles differentiated by functional motivations, cognitive expectancies, injury frequency, and injury form. This approach enabled identification of distinct subgroups within the NSSI population organized around anatomical considerations rather than treating location as a secondary descriptor.

Results

Latent class analysis identified multiple distinct profiles of self-injury organized by anatomical location. Each profile demonstrated a unique constellation of functional purposes, outcome expectancies, behavioral patterns, and injury methods. The profiles differed systematically in reinforcement contingencies, cognitive predictions, engagement frequency, and mode of injury implementation. These location-based distinctions proved more granular than conventional NSSI categorizations and better captured the heterogeneity of the NSSI population.

Implications

Anatomical location warrants incorporation into assessment protocols for NSSI. Clinical evaluation should document location alongside function and form to capture clinically meaningful variation. Treatment planning may benefit from location-specific considerations, as different sites correlate with distinct motivational and cognitive profiles. Future intervention research should examine whether location-informed approaches enhance treatment specificity and outcomes.

Scope and limitations

This summary is based on the study abstract and available metadata. It does not include a full analysis of the complete paper, supplementary materials, or underlying datasets unless explicitly stated. Findings should be interpreted in the context of the original publication.