AI-Assisted Grief-Focused Guided Narrative Writing for Subclinical Prolonged Grief Disorder in Bereaved Chinese Adolescents: A Three-Arm Parallel Randomized Controlled Trial.

Inclusion Criteria

Inclusion Criteria: * Junior and senior high school students currently studying in Chinese Mainland, aged 10-19; * Between 6 and 60 months prior to the experimental period, experienced the death of a significant family member or close friend or close friend; * The total symptom score of PG-13-R is between 20-29 points; * Ability to write and understand written guidelines, to use the mobile phone to interact with AI; * Consent to participate in the study. Exclusion Criteria: * Diagnosed or previously diagnosed with mental illness * The bereavement time does not meet the time window * PG-13-R score is not within the range * At present, there is suicidal ideation or recent severe self harm behavior (Reynolds' Suicidal Ideation Questionnaire, SIQ-JR-4\>0), and a crisis intervention hotline is provided when necessary. * Has received other grief counseling or is currently taking psychiatric medication within the past month