This month's Research Dose looks at a study that offers part of the answer. Richard Boyatzis and colleagues followed 60 physician coaches and their medical-student clients for two years. Outside observers, not the coaches or clients themselves, rated both sides.
Citation:
Boyatzis, R., Liu, H., Smith, A., Zwygart, K., & Quinn, J. (2024). Competencies of coaches that predict client behavior change. The Journal of Applied Behavioral Science, 60(1), 19–49.