The Effectiveness of Workplace Coaching: A Meta-analysis of Learning and Performance Outcomes from Coaching.

Jones, Rebecca J., Woods, S.A. and Guillaume, Y.R.F. (2015) The Effectiveness of Workplace Coaching: A Meta-analysis of Learning and Performance Outcomes from Coaching. Journal of Occupational and Organizational Psychology, 89 (2). pp. 249-277. ISSN Online: 2044-8325

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Abstract

This study presents a meta-analysis synthesizing the existing research on the effectiveness of workplace coaching. We exclusively explore workplace coaching provided by internal or external coaches and therefore exclude cases of manager-subordinate and peer coaching. We propose a framework of potential outcomes from coaching in organizations, which we examine meta-analytically (k = 17). Our analyses indicated that coaching had positive effects on organizational outcomes overall ( = 0.36), and on specific forms of outcome criteria (skill-based  = 0.28, affective  = 0.51; individual-level results  = 1.24). We also examined moderation by a number of coaching practice factors (use of multi-source feedback; type of coach; coaching format; longevity of coaching). Our analyses of practice moderators indicated a significant moderation of effect size for type of coach (with effects being stronger for internal coaches compared to external coaches) and use of multi-source feedback (with the use of multi-source feedback resulting in smaller positive effects). We found no moderation of effect size by coaching format (comparing face-to-face, with blended face-to face and e-coaching) or duration of coaching (number of sessions or longevity of intervention). The effect sizes give support to the potential utility of coaching in organizations. Implications for coaching research and practice are discussed.

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