Judith Carpenter RD is a motivational interviewing trainer and registered dietitian. Judith has always been interested in the psychology around eating behaviour, and became involved in motivational interviewing  (MI) training in order to improve clinical care with her patients. Following a career as an NHS dietitian for more 20 years working in a wide variety of clinical areas, she opened her own training consultancy, Optimal Change, in 2008 to concentrate on delivering motivational interviewing training which she does both nationally and internationally. Judith delivers MI training to a variety of professionals working in healthcare, social care, local government, leisure services, psychological services, education and employment both nationally and internationally, and has extensive experience in MI training and helping people to learn MI. She is an active member of the Motivational Interviewing Network of Trainers (MINT) and sat on the Board of Directors for this international organisation from 2009-2013.

Nina Gobat, PhD is a clinician researcher based at the Wales School of Primary Care Research at Cardiff University, with a particular interest in healthcare communication, motivation and behaviour change at individual and population levels. Prior to thisNina worked clinically in metal health and addiction treatment services for 12 years most recently with young people experiencing early psychosis. Nina is an active member of the  Motivational Interviewing Network of Trainers (MINT) and has developed and delivered behaviour change training programmes, nationally and internationally, with a range of organisations, working in a variety of health contexts including substance misuse, diabetes management, primary care, early psychosis, dentistry and general practice.

Stephen Rollnick, PhD is a Distinguished Honorary Professor at Cardiff University and one of the co-founders of MI. He is part of our Cardiff-based team and provides mentorship and support to us, and wider training and consultancy to other people and organisations. Details of his current work can be found on www.stephenrollnick.com