“…Historically, few systematic studies have been conducted on the effects of clinical supervision on therapist competence and/or client outcome. However, there is some research, of varying quality, that provides some support for supervision effects on supervisees (Alfonsson et al, 2018; Barrett et al, 2020; Barwick et al, 2012; Bradley & Becker, 2021; de de Roten et al, 2013; Hoge et al, 2011; Kuhne et al, 2019; Madson et al, 2019; Milne et al, 2011; Park et al, 2019; Schwalbe et al, 2014; Spence et al, 2012). Yet, a recent review of reviews of research on clinical supervision from 1995 to 2019 concluded that the evidence supporting supervision impact on supervisee and client outcomes is weak at best, and that methodological problems are still hampering the field (Watkins, 2020).…”