Leadership and Motivation: The Fifty-Fifty Rule and the Eight Key Principles of Motivating OthersJohn Adair has transformed our understanding of how leadership works with his pioneering book Not Bosses But Leaders. Here he explores the nature of motivation, individual needs and how they relate to the key tasks facing leaders and managers good, positive motivation can create, maintain and improve the performance of any team. In Leadership and Motivation John Adair also puts forward his own theory of motivation the fifty fifty rule and then