Whilst research has looked at posttraumatic stress disorder (PTSD) and psychiatric co-morbidity among civilians exposed to bombing, there is a lack of longitudinal data on the development of these outcomes and the psychological factors associated with them, particularly among Iraqi civilians. This study aimed to: investigate 1) the trajectory of PTSD and psychiatric co-morbidity following bombing among civilians in Iraq and 2) the link between shattered world assumptions, altered self-capacities and identified health outcomes. One hundred and eighty (F=90, M=90) Iraqi civilians exposed to first time bombing were recruited approximately one month (time 1) after the bombing and five months (time 2) after the baseline assessment. A control group data (178, F=91, M=87) from people who were not exposed to bombing was also collected. They completed the Posttraumatic Stress Diagnostic Scale, the General Health Questionnaire-28, the World Assumptions Questionnaire and the Inventory of Altered Self-Capacities. The results showed that there was a significant decline in the proportion of people meeting the screening criteria for PTSD and psychiatric co-morbidity symptoms over time. For the cross-sectional analysis, controlling for demographic variables, regression analysis showed that severity of the bombing (β=.16), controllability of events (β=-.21), safety and vulnerability (β=.31) and affect dysregulation (β=.37) significantly predicted PTSD time 1. Controllability of events (β=-.20) and affect dysregulation (β=.37) also predicted psychiatric co-morbidity at time 1. For the prospective analysis, controlling for PTSD and psychiatric co-morbidity at time 1, none of these dimensions predicted PTSD and psychiatric co-morbidity at time 2. Findings are discussed in terms of individual resilience. It can be concluded that following bombing, civilians developed PTSD and psychiatric co-morbidity which declined over time. Civilians' perceptions of their ability to control events in the world and regulate their affect had a short term impact on the severity of these symptoms. © 2012 Elsevier Ltd.