Thinking about behaviour change:

an interdisciplinary dialogue

Edited by Simon Christmas, Susan Michie and Robert West

Simon Christmas

Simon Christmas is an independent social researcher with extensive experience of delivering projects for public and private sector clients. Specifically, Simon helps clients to understand behaviour and motivation from the perspective of the agent – the target audience, consumer, service user or citizen – in order to develop better policies, strategies, products, services, propositions or behaviour change interventions. He is a Visiting Senior Research Fellow at Centre for Public Policy Research, King’s College London, and an Associate of the Centre for Behaviour Change at University College London. He is a Chartered Psychologist and Certified (Full) Member of the Market Research Society. For more information see

Susan Michie

Susan Michie is Professor of Health Psychology at University College London, UK, where she is Director of the Centre for Behaviour Change ( and of the Health Psychology Research Group. With a background in experimental and clinical psychology, and Professor Michie has been a key player in advancing behavioural science methods, including the application of theory to developing and evaluating interventions to promote the prevention and management of ill health and the delivery of evidence-based health services. She regularly contributes to national and international policy work, including, including as co-director of the National Centre for Smoking Cessation and Training; member of NICE's Implementation Strategy Group and of its Behaviour Change Programme Guidance Development Group; Chair of the Behaviour and Communications group of the cross-Government Scientific Pandemic Infl uenza Advisory Group; member of Public Health England and the Department of Health's Behavioural Insights Expert Advisory Group. She is author of over 200 scientific articles and of the Behaviour Change Wheel: Guide to Designing Interventions (2014). For more information, see

Robert West

Robert West is Professor of Health Psychology and Director of Tobacco Studies at the Cancer Research UK Health Behaviour Research Centre, University College London, UK. Professor West is also Editor-in-Chief of the journal Addiction. He is founder of the PRIME Theory of motivation and author of Theory of Addiction. He has authored more than 500 scientific articles, books and book chapters. He was co-founder of the NHS stop-smoking services. His research includes evaluations of methods of helping smokers to stop and population surveys of smoking and smoking cessation patterns. He is author of 'The SmokeFree Formula' (Orion) which aims to bring the science of stopping to smokers and of the Behaviour Change Wheel: Guide to Designing Interventions (2014). For more information see

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