'This is an important book on how governments and others can affect the behavioural habits fundamental to addressing many contemporary policy challenges. Particularly valuable is the argument that nudge involves not just choice architecture and social messaging but a reform of political institutions and bureaucracies. The promotion of self-reinforcing and beneficial behaviours, including by an ''agent-centred'' version of nudge, is expertly illustrated through a range of cases from Professor John and others' research. Overall, the book makes a powerful case for ''nudge plus'' as a more open, reflective and decentralised form of nudging.' --Oliver James, University of Exeter, UK 'There are few people better placed to capture the complex interactions between behavioural science and public policy research than Peter John. This timely book will help both academics and policy-makers understand better the scientific, ethical, and practical issues arising from the continuing growth of behavioural public policy applications.' --Liam Delaney, University College Dublin, UK 'Peter John is a relatively rare breed - a political scientist working in the burgeoning field of behavioural public policy. In this new book, he takes the reader on a journey, in discussing how the field has developed, its limitations and the ethical challenges that it faces.

Ultimately, John reveals himself to be a strong proponent of a principal aspect of behavioural public policy - i.e. so-called nudges - and yet, interestingly, advocates for nudges to be supplemented by approaches that encourage deliberative consideration by those targeted for behaviour change. This, he defines, as nudge plus.' --Adam Oliver, The London School of Economics and Political Science, UK.