Motivational interviewing in dual diagnosis engagement (MEQ)

(i) Definition and contrasts. MI is a collaborative, goal-oriented style that strengthens the person's own motivation and commitment to a specific change by exploring and resolving ambivalence.^[1][2] Brief advice is more directive information/recommendation (often after screening) with less systematic evocation. CBT targets skills, cognitions, and homework once commitment allows learning; MI is especially useful while ambivalence blocks engagement. MI is not identical to stages of change, though stage language can guide focus.^[2]

(ii) Spirit and OARS. PACE: Partnership (shared expertise about his life and illness), Acceptance (worth, empathy, autonomy, affirmation), Compassion (his welfare over winning the argument with his partner), Evocation (draw out his reasons).^[1] O: "What worries you most about the drinking and the depot at the moment?" A: "You've kept coming despite a lot of pressure — that takes effort." R (complex): "Part of you wants life less stressful before changing, and part of you is already noticing the liver tests and missed clinics." S: "So stress is the main trigger, labels feel unhelpful, and staying well on the injection still matters — where would you like to go from here?"

(iii) Change vs sustain talk. Sustain/status-quo: "when life is less stressful," rejecting the alcoholic label, declining rehab now. Change-leaning seeds: engagement with clinic, concern implied by discussing LFTs, depot adherence goal. Respond to sustain talk with reflection and autonomy emphasis, not argument. Selectively reinforce any desire/ability/reasons/need and gently seek commitment language; Amrhein-type commitment strength is prognostically meaningful in MI process research.^[6] Avoid the partner's "make him stop" frame becoming your righting reflex.^[1]

(iv) Evidence. Project MATCH: MET produced outcomes broadly comparable to longer CBT/TSF for many alcohol endpoints; matching hypotheses largely unsupported.^[11] UKATT: MET and social behaviour and network therapy both effective in UK alcohol treatment settings.^[13] Cochrane synthesis: MI can reduce substance use versus no intervention short-term; incremental benefit versus other active treatments is smaller/uncertain — quote modest expectations.^[16] Integrate with antipsychotic adherence care and medical alcohol assessment rather than MI alone.

(v) Defer/subordinate pure MI. Examples: acute alcohol withdrawal or Wernicke risk needing medical treatment; incapacity/acute risk requiring compulsory pathways; severe intoxication preventing meaningful dialogue; situations needing immediate risk management (e.g. driving while intoxicated plans, suicidality). Respectful MI language can continue, but safety and medical care lead.^[1][16]