Marie Johnston is a Registered Health and Clinical Psychologist, and Emeritus Professor of Health Psychology at the University of Aberdeen. She is a Fellow of the BPS, the Royal Society of Edinburgh and the Academy of Medical Sciences and Academician of the Academy of Learned Societies for the Social Sciences. She conducts research on disability (theory, measurement and intervention) and on behaviour change in health and healthcare contexts. In 1986, she became the first chair of the Health Psychology section of the BPS and in 1992, the second president of the European Health Psychology Society. She has served on numerous BPS committees and in 1994 gained the BPS President’s Award. In 2014 she was named on the Science Council’s list of the UK’s top 100 scientists. Her previous posts were at the University of St Andrews, London University (Royal Free Hospital School of Medicine) and Oxford University, having completed her BSc at the University of Aberdeen and PhD at the University of Hull.