“…Such beliefs dominate patients' lives to a considerable degree (Tan et al, 2006) and are strongly associated with their self-identities (Gregertsen, Mandy, & Serpell, 2017). Indeed, the way in which those with AN identify with their values regarding thinness is a well-recognized contributing factor to treatment resistance (Fixsen, Ridge, Ponsford, Holder, & Saran, 2022;Vitousek et al, 1998). Finally, in terms of aetiology, value of thinness beliefs may bear more similarity to overvalued ideas, as there is a plausible link between such beliefs and personality traits, such as perfectionism (Fairburn, Cooper, & Shafran, 2003).…”