Interapy: a controlled randomized trial of the standardized treatment of posttraumatic stress through the internet

J Consult Clin Psychol. 2003 Oct;71(5):901-9. doi: 10.1037/0022-006X.71.5.901.


Online therapy offers many advantages over face-to-face therapy. Interapy includes psychoeducation, screening, effect measures, and a protocol-driven treatment via the Internet for people suffering from posttraumatic stress. The present article reports the results of a controlled trial on the Internet-driven treatment of posttraumatic stress and grief in a group of people who manifested mild to relatively severe trauma symptoms. Participants in the treatment condition (n=69) improved significantly more than participants in the waiting-list control condition (n=32) on trauma-related symptoms and general psychopathology. The effect sizes were large. On most subscales, more than 50% of the treated participants showed reliable change and clinically significant improvement, with the highest percentages being found for depression and avoidance.

Publication types

  • Clinical Trial
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Female
  • Follow-Up Studies
  • Humans
  • Internet*
  • Male
  • Stress Disorders, Post-Traumatic / therapy*
  • Surveys and Questionnaires
  • Treatment Outcome
  • User-Computer Interface*