Taking a system perspective, Bill Gillham argues in his introductory chapter that ‘our conception of the individual has been too narrow’, so that both treatment and punishment approaches have missed out important elements in an adequate psychology of individuals: the roles they fill, the tasks they perform, the people they encounter – and the institutional settings where all these are experienced. Drawing together a wide range of theory, evidence and practice, the present book makes out a case for a school-centred, interactionist, approach to dealing with problem behaviour.