“…These concepts have been applied to different behaviours and disorders such as physical activity (Berry, Naylor, & Wharf-Higgins, 2004), smoking (DiClemente, Prochaska, Fairhurst, Velicer, Velasquez, & Rossi, 1991), alcohol abuse (Rollnick, Heather, Gold & Hall, 1992) or obesity (Prochaska, Norcross, Fowler, Follick, & Abrams, 1992). Several studies have stressed the importance of motivation to change in adults with eating disorders with regard to ensuring clinical improvement and maintenance (Bewell & Carter, 2008;Geller, Cockell & Drab, 2001;Hasler, Delsignore, Milos, Buddeberg, & Schneyeder, 2004;RodriguezCano & Beato-Fernández, 2005;Vitousek, Watson, & Wilson, 1998;Wolk & Devlin, 2001). In adolescents with anorexia nervosa, motivation to change has also been related to better treatment response (Ametller, Castro, Serrano, Martínez, & Toro, 2005;CastroFornieles et al, 2007).…”