In the ACT intervention, participants will perform six computerized attention training sessions, 10 minutes per training session over six weeks (a session once a week). Training will be done through a username and password protected website designated for this purpose, so the participants could complete the training from home. The computerized psycho-educational control intervention will consist of six learning sessions describing post-trauma and its prognosis delivered over the internet in the same way and frequency as the ACT intervention. Finally, the participants assigned to the control condition without intervention will be followed-up three months after recruitment.