“…On a general level, coaching effectiveness refers to an optimization of a person's work-related functioning (Bozer & Jones, 2018;Theeboom et al, 2014). Several studies in our review operationalized effectiveness in terms of coaching goal achievement (Bachkirova et al, 2015;Bickerich et al, 2018;Dolot, 2017;Gessnitzer & Kauffeld, 2015;Ianiro et al, 2013Ianiro et al, , 2015Jordan & Kauffeld, 2020;Smither et al, 2003;Zimmermann & Antoni, 2018). Besides, general coaching effectivity was used as an outcome measure in several studies (Bachkirova et al, 2015;Bono et al, 2009;De Haan, 2008;De Haan et al, 2009).…”