Developmental mentoring is one of two dominant approaches to mentoring; the other being sponsorship mentoring. (Sometimes described as relational v instrumental mentoring). As one of the pioneers of developmental mentoring, David Clutterbuck set out to explore what occurred with this kind of learning relationship, using a longitudinal research design that involved three stages of questionnaires to both mentors and mentees, in their dyads, within formal mentoring programmes and over a 12 month period. Because all the existing measurement instruments were based on sponsorship mentoring, it was...