The relationship is what makes the most difference to coaching outcomes. Client self-efficacy (the client’s self-belief) is also an important active ingredient in successful outcomes, according to preliminary findings from the Greatest Coaching Outcome Research Project, thought to be the largest-ever such study. The project also finds that clients, coaches and sponsors agree on what they see as a coaching outcome, and that coach self-efficacy does not correlate with client outcome – unlike client self-efficacy – be it rated by the client or the coach. Lead researcher Erik de Haan and...