Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
This paper examines the way in which individuals' output changes as they are promoted within an hierarchical organisation. We suggest a decomposition of the change in output which allows us to see that changes in tournament incentive may in fact disguise part of the observed fall in output. We discuss the role which may be played by learning on the part of line managers, and changes due to the change in grade which a promotion entails. We are unable to distinguish whether the effect of grade itself is due to increased task difficulty or other changes which a higher grade entails such as increased span of control but we show how to work out the contribution which can be attributed directly to the Peter Principle.