Abstract
Event centrality is defined as the extent to which traumatic events are perceived to be integral to one's life. However, there are discrepancies regarding the factor structure of event centrality, as the factor structure may differ depending on the nature of the trauma. Event centrality has predicted posttraumatic stress disorder (PTSD); yet, few studies have taken into account other key cognitive predictors of PTSD, such as posttraumatic cognitions. The PTSD symptom clusters also remain largely unexamined, despite potential specificity in their ties to event centrality. The aims of the current study were to: (a) examine the factor structure of event centrality and whether the structure differs following interpersonal versus noninterpersonal trauma; (b) investigate whether event centrality predicts PTSD symptom clusters beyond posttraumatic cognitions; and (c) determine if the associations between event centrality, posttraumatic cognitions, and PTSD are equivalent between trauma types. The study aims were examined utilizing 263 college students (Mage = 24.54, SD = 6.29; 79.8% female; 58% White). Event centrality was best represented by one factor, which was consistent between groups. Structural equation models indicated that event centrality and posttraumatic cognitions regarding the self predicted each of the PTSD symptom clusters across groups, βs = .27-.58. However, event centrality was more strongly related to avoidance symptoms among individuals who experienced a noninterpersonal trauma. For both the interpersonal and noninterpersonal groups, event centrality had equivalent ties to each cluster. Even after accounting for negative trauma-related beliefs, event centrality appears to be relevant in understanding posttrauma functioning.
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