The impact of common factors on coaching outcomes

Previous studies examining coaching outcomes generally rely on cross-sectional data which limits our understanding of the enduring and long-term effects of coaching. To address this issue, this study, based on longitudinal data, explores several popular variables associated with coaching outcomes. The study is underpinned by Lambert’s [(1992). Lambert, M. J. (1992). Psychotherapy outcome research: Implications for integrative and eclectic therapists. In J. C. Norcross, & M. R. Goldfried (Eds.), Handbook of psychotherapy integration (pp. 94–129). Basic Books] four-factor model of common factors and recognises them as variables which are customary to all coaching approaches contributing to coaching outcomes. The study considers stress, wellbeing, resilience, goal attainment and coaching effectiveness as coaching outcomes. Working alliance mediates the impact of self-efficacy, outcome expectations; and perceived social support which are regarded as the predictors of the coaching outcomes. The results indicate that social support predicts working alliance, and working alliance in turn predicts wellbeing and coaching effectiveness over time. The findings suggest that it is vital for coaches to monitor changes in the coachees’ social networks and their working alliance since these have a significant bearing on the effectiveness of the sessions and the coachees’ wellbeing.