Single-Session Intervention Targeting Self-Injurious Behavior in Adolescents

Inclusion Criteria: * Must be 13 - 16 years old at the time of the baseline survey * Must report comfort reading and writing in English * Must endorse no learning disability, visual impairment, or other difficulty that makes it difficult to answer questions on a computer * Must have access to a laptop or smartphone with internet access * Must endorse purposefully hurting self without wanting to die within the past month * Must endorse either "I do not like myself" or "I hate myself" on CDI-II item 7 in a screener survey Exclusion Criteria: Type 1 exclusions are exclusions that can be automated and do not require consensus among investigators. A research team member who will not be involved with conducting the primary study analyses will use type 1 exclusions to determine when participant recruitment is complete. Recruitment for the present study will end once 500 participants have been randomized who pass all type 1 exclusions tests (i.e. are still eligible for inclusion after excluding for type 1 criteria; see our section on sample size for more details). Type 1 exclusions include: * Not meeting inclusion criteria * Participants who exit the study prior to condition randomization for our listed analyses (note: the present study will use an intention-to-treat approach, where every participant who was randomized to a study condition-and who is not excluded for one of the specific reasons outlined in this section-will be included our our analyses) Type 2 Exclusions Type …