This is a protocol for a Cochrane Review (Intervention). The objectives are as follows: The objectives of this review will be to: assess the efficacy of couple and family therapies for adult PTSD, relative to 'no treatment' conditions, 'standard care', and structured or non‐specific individual psychological therapies; examine the clinical characteristics of studies that influence the relative efficacy of these therapies; and critically evaluate methodological features of studies that bias research findings
