Group Version of CRAFT Compared to Self-Directed CRAFT Delivery and Non-intervention: a Three-armed RCT

Inclusion Criteria: * CSO has concern about and having direct knowledge of alcohol- and/or drug problems of an IP, who is either a first degree relative, intimate partner or close friend. * Age at least 18 years (the CSO) * Reports that IP is not currently in addiction treatment (at IrisZorg and elsewhere) and has not received addiction treatment in the past 3 months * Reports that IP is treatment-refusing * Evidence (according CSO) that the IP meets criteria for SUDs according to The Structured Clinical Interview for DSM IV axis 1 Disorders (SCID-I) Exclusion Criteria: * Does not demonstrate an adequate understanding of their participation, informed consent, and requirements of the protocol, or has insufficient reading abilities to comprehend the Dutch self-help book or does not agree to participate by refusing to sign an informed consent * CSO meets the DSM-IV criteria for any current SUD diagnosis, through clinical assessment by The Structured Clinical Interview for DSM IV axis 1 Disorders (SCID-I) and the Dutch version of the Mini- International Neuropsychiatric Interview ( M.I.N.I.) * Refuses to provide valid locator information, allow audiotaped sessions, and/or participate in follow-ups * Evidence that the IP had received treatment (other than detoxification) for alcohol or drug problems in the prior three months, was mandated by the courts to receive treatment, or was currently motivated to accept treatment * IP has a recent history of severe domestic violence * CS…