Ten to fourteen days after the event, the participants who agreed to participate and signed the informed consent will be contacted by telephone. In this conversation, a diagnostic interview for ASD (Acute Stress Disorder Interview, ASDI; Bryant, Harvey, Dang, & Sackville, 1998) will be conducted in addition to questions about potential exclusion criteria. Those who demonstrate a high level of ASD symptoms (scores 14 and above in the ASDI), will be randomly assigned to one of three conditions: attention control training (ACT) intervention, a computerized psycho-educational intervention (an active control condition), or a control condition without intervention.