The intervention group will receive an online psychoeducational program for 8 weeks. The psychoeducation package consists of 16 different sets of reading materials and post-session writing/reflection exercises, which will be delivered to the participants twice a week. The program is designed to be a brief, trauma-informed, dissociation-focused education package that aims to enable users to better understand and cope with their post-traumatic and dissociative reactions and related life challenges. There are specific psychoeducation elements in each session, such as: (1) safety issues planning, (2) understanding the impacts of trauma and stress, (3) understanding the concept of dissociation and integration of the personality, (4) identifying and coping with the post-traumatic and dissociative symptoms, (5) identifying trauma-related cognitive distortions.

The waitlist control group will receive an online psychoeducational program for 8 weeks a week after the completion of the two-month follow-up in the intervention group. The psychoeducation package is identical to the program in the intervention group.

The intervention group will receive an online psychoeducational program for 8 weeks. The psychoeducation package consists of 16 different sets of reading materials and post-session writing/reflection exercises, which will be delivered to the participants twice a week.

Change in participants' coping strategies, as assessed using the Brief-COPE. This measure has 28 items and is a commonly used self-report measure of coping strategies. The Chinese version of the Brief-COPE had excellent internal consistency, test-retest reliability and content validity. Higher scores indicate more significant use of that specific coping strategy.

Change in participants' pathological dissociative experiences, as assessed using the DES-T. This measure has 8 items and can be used to screen for pathological dissociative experiences. The Chinese version of the DES-T demonstrated good construct validity and good discriminant validity between participants with and without clinically diagnosed dissociative disorders, with a cut-off score of 20. Higher scores indicate more frequent dissociative symptoms.

Change in participants' emotion regulation, as assessed using the ERQ. This measure has 10 items and is a self-report measure of emotion regulation. It has good internal consistency and established construct validity. The Chinese version of the ERQ also demonstrates good internal consistency and construct validity. Higher scores indicate greater use of that particular emotion regulation strategy.