Recent research has looked into the links between cognition problems and the development of eating disorders. People with eating disorders tend to have poorer performance in set-shifting tasks where they are asked to transfer their attention from one element to another. There has also been research into the links between central coherence and eating disorders; central coherence being the ability to understand context and see 'the big picture.' A review of 16 studies into central coherence and eating disorders has found that the majority of them found that people with eating disorders did have global processing difficulties i.e. a weak central coherence. However, there was little evidence that people with eating disorders had stronger 'local' processing in terms of tackling detailed, specific tasks.
Lopez, C. ... [et al] - Central coherence in eating disorders: a systematic review Psychological Medicine October 2008, 38(10), 1393-1404