“…Early case studies utilizing DBT techniques with PWID and BPD (Esbensen & Benson, ; Mavromatis, ; Wilson, ) reported marked improvements in aggressive and self‐injurious behaviours; however, conclusions on the effectiveness of DBT as a standalone intervention were precluded. More recently a pre–post case series delivering fully adapted DBT programmes reported significant reductions in aggression, risk‐taking and/or self‐harm (Brown, Brown, & Dibiasio, ; Charlton & Dykstra, ; Lew, Matta, Tripp‐Tebo, & Watts, ; McNair, Woodrow, & Hare, ) and the prevention of community placement breakdown (Baillie & Slater, ). An unpublished study of adapted DBT by McNair () found significant reductions in levels of depression, anxiety and anger, and significantly improved mindfulness skills, yet participants’ anxiety remained within the clinical range.…”