David Thomas grew up in Derbyshire, where he still lives and works as a company director and consultant. He is a Fellow of the Chartered Management Institute and holds masters and doctoral degrees in management, although he has wide-ranging experience in industry at all levels, and in the early 1980s he lived and worked in Brazil and France. His research interests are in managerial psychology, narcissistic behaviour, and the philosophy of happiness. Over many years he has researched the behaviour of CEOs and senior managers, as well as of office staff and shop-floor workers from a variety of walks of life. He is married with two children.