Age

8–18

Sex

ALL

Healthy volunteers

Accepted

Adolescents aged 8-18 years.
Able to understand and complete questionnaires in Chinese.
Normal or corrected-to-normal vision and hearing.
Have at least a primary school education level.
Provide written informed consent from both the participant and their parent or guardian.
For the depressed group: score \> 9 on the Patient Health Questionnaire for Adolescents (PHQ-A).
For the non-depressed group: score ≤ 9 on the PHQ-A.

Presence of severe physical illness or neurological disease (e.g., traumatic brain injury).
Cognitive impairment, intellectual disability, or significant visual/hearing impairment that prevents participation.
Current psychotic symptoms or severe psychiatric comorbidities.
Active suicidal or self-harming behaviors during the study period.
Failure to comply with study procedures or withdrawal of consent.

Video Intervention to Reduce Depression-related Stigma Among Adolescents