Attention control in known to be a protective factor against attentional bias for threat stimuli. This study examined the role it plays in the relationship between post-traumatic stress symptoms (PTSS) and intrusive rumination. To this end, a total of 276 students from a university located in Gyeongnam completed a self-report survey. The questionnaire included an Impact of Event Scale-Revised, an Event Related Rumination Inventory, an Attention Control Questionnaire, and a State-Trait Anxiety Inventory. The final analysis was conducted on the data from 189 students who experienced a trauma event rated as being shocking, fearful, and helpless. The Process macro for SPSS was used to analyze the moderation effect. As a result, the moderating effect of attention control was significant in the relationship between sleep disturbance/emotional dullness and dissociation and intrusive rumination. Attention control worked as the protective factor in the relationship between these PTSS and intrusive rumination. The analysis of the relationship between other PTSS (e.g. hyperarousal, avoidance, and intrusive symptoms) and intrusive rumination in the range of attention control using the Johnson-Neyman technique revealed that there was a region in which the significance of the relationship changes. Specifically, the hyperarousal symptom in a group above 3.70% of attention control was not significantly related to intrusive rumination. Furthermore, the avoidance symptom in a group above 29.63% of attention control was not significantly related to intrusive rumination either. These results suggest that improving attention control may be useful in mitigating PTSS and intrusive rumination.
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