Single-Session Intervention Targeting Self-Injurious Behavior in Adolescents

Participants (aged 13-16) will be randomized to: (1) an online, active control group program encouraging feelings disclosure (i.e. supportive therapy single session intervention \[SSI\]), or (2) an online program targeting nonsuicidal self-injury (NSSI; i.e. Project "SAVE"-Stop Adolescent Violence Everywhere-SSI). Investigators will test whether SAVE results in significantly greater: 1. Reductions in NSSI 3 months post-treatment \[primary outcome\] 2. Reductions in self-reported likelihood of future NSSI immediately post-treatment \[secondary outcome\] 3. Reduction in suicide ideation frequency 3 months post-treatment \[secondary outcome\]