Findings
assessor-rated nonsuicidal self-injury, nonsuicidal self-injury
In this randomized clinical trial that included 166 adolescents, internet-delivered emotion regulation individual therapy delivered adjunctive to treatment as usual resulted in an 82% reduction in masked assessor-rated nonsuicidal self-injury frequency (vs a 47% reduction in treatment as usual only), a statistically significant difference. Improvements in emotion regulation mediated improvements in nonsuicidal self-injury.