“…Within prisoner groups, typical rates of refusal to enter treatment are up to 70% (Black et al, 2011; Dalton, Majoy & Sharkey, 1998) and treatment drop-outs can be as high as 93% (Gondolf & Foster, 1991). Although our previous trial of CBSP for suicidal people experiencing psychosis (Tarrier et al , 2014) achieved an attrition rate of less than 30%, attrition for the current study (44%) was more in keeping with other trials of CBT for suicide prevention (Morley et al , 2014) and intervention evaluations conducted with prisoner participants (Black et al, 2011; Olver, Stockdale & Wormith, 2011). As such, when conducting future trials, researchers may need to pay even more attention to assessing and enhancing motivation amongst the target group of participants, and prison staff, to facilitate successful recruitment.…”