“…Taylor et al (2008) reviewed the evidence regarding the impact of full scale IQ and verbal IQ on therapy outcomes, reporting that while some studies reported better outcomes for clients with a higher verbal IQ (Rose, Loftus, Flint, & Carey, 2005;Willner, Jones, Tams, & Green, 2002), others reported greater improvements from pre-intervention to follow-up for clients with lower full scale IQ scores (Taylor, Novaco, Gillmer, Robertson, & Thorne, 2005). This discrepancy could be associated with mode of delivery, individual versus group-based treatments, and intensity or frequency of sessions (Taylor et al, 2008). Meta-analytic evidence supports the first assumption, with both Prout and Nowak-Drabik (2003) and later Vereenooghe and Langdon (2013) affirming greater therapy efficacy for individual rather than group therapy.…”