A Two-factor Account of False Body Size Beliefs in Anorexia Nervosa
Stephen Gadsby is a PhD candidate in the Cognition and Philosophy lab , Monash University. His research spans a number of topics, including anorexia nervosa, body representation, delusions, psychiatric taxonomy, mental representation and predictive processing. In this post, he summarises his new paper "Self-Deception and the Second Factor: How Desire Causes Delusion in Anorexia Nervosa" recently published in Erkenntnis. Research shows that anorexia patients don’t hold extreme body ideals, despite common misconception. Indeed, most patients are thinner than what they judge their ideal size to be. In this paper , I advance a two-factor explanation for why patients believe they haven’t yet reached their ideal size. This account attempts to answer two questions: how the content of this belief arises and why the belief is maintained in the face of contradictory evidence. Following from previous work (Gadsby 2017a ; 2017b ), I answer the first of these question by sugg...