Aspects of the stressor criterion for posttraumatic stress disorder (PTSD) have been controversial since its inception, and the theoretical or empirical reasons for decisions about it have not been clear. To investigate whether sudden events involving severe emotional loss have the potential to precipitate PTSD, we assessed exposure to Criterion A stressors, sudden abandonment, sudden move or loss of home, and symptoms of PTSD and dissociation in a community sample of 427 adults. In regression analyses, models that included a severe emotional loss stressor accounted for a significant amount of additional variance in PTSD and dissociation symptoms beyond that accounted for by a model including only Criterion A stressors. The findings suggest that limiting Criterion A1 to events involving actual or threatened death or injury may be overly restrictive. Future research is needed to replicate these findings in a clinical sample and to prospectively examine the conditional probability of PTSD following these events.