Chapter 2 is published as: Rouse, Peter C. and Ntoumanis, Nikos and Duda, Joan L. and Jolly, Kate and Williams, Geoffrey C. (2011) In the beginning: Role of autonomy support on the motivation, mental health and intentions of participants entering an exercise referral scheme. Psychology and Health, 26 (6). pp. 729-749. http://eprints.bham.ac.uk/705/