Event Centrality: Factor Structure and Links to Posttraumatic Stress Disorder Symptom Clusters

Area of Science:

• Psychology
• Trauma Studies
• Mental Health

Background:

• Event centrality, the perceived integration of traumatic events into one's life, is a known predictor of posttraumatic stress disorder (PTSD).
• Discrepancies exist regarding the factor structure of event centrality, potentially influenced by trauma type (interpersonal vs. noninterpersonal).
• The role of event centrality in predicting specific PTSD symptom clusters, especially in conjunction with posttraumatic cognitions, requires further examination.

Purpose of the Study:

• To examine the factor structure of event centrality and its potential differences between interpersonal and noninterpersonal trauma.
• To investigate if event centrality predicts PTSD symptom clusters independently of posttraumatic cognitions.
• To determine the equivalence of associations between event centrality, posttraumatic cognitions, and PTSD across different trauma types.

Main Methods:

• Utilized structural equation modeling with data from 263 college students.
• Assessed event centrality, posttraumatic cognitions (specifically negative beliefs about the self), and PTSD symptom clusters.
• Analyzed data separately for participants who experienced interpersonal versus noninterpersonal trauma.

Main Results:

• Event centrality was consistently represented by a single factor across both interpersonal and noninterpersonal trauma groups.
• Both event centrality and negative self-related posttraumatic cognitions significantly predicted all PTSD symptom clusters (βs = .27-.58).
• Event centrality showed a stronger association with avoidance symptoms in the noninterpersonal trauma group, but its ties to symptom clusters were equivalent between trauma types.

Conclusions:

• The factor structure of event centrality is robust and consistent regardless of trauma type.
• Event centrality is a significant predictor of PTSD symptom clusters, even after accounting for posttraumatic cognitions.
• Understanding event centrality is crucial for comprehending posttrauma functioning and developing targeted interventions for PTSD.