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Title: Cognitive functioning in anorexia and bulimia
Author: Isles, J. I.
Awarding Body: University of Edinburgh
Current Institution: University of Edinburgh
Date of Award: 2000
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This study compared cognitive test performance between matched controls and participants with anorexia (N=30) and bulimia (N=30) nervosa. The results found that both of the eating disorder groups demonstrated a considerable number of neuropsychological deficits. However between-group significance was not established and the deficits were accounted for by a small subgroup of participants. On analysing group results over a wide range of cognitive tests, both clinical groups performed more poorly than controls on attentional, learning and visuo-spatial/constructional tasks. There was however no evidence of executive difficulties. On partialling out the effects of anxiety and depression, between-group significance was removed on a considerable proportion of the test results. However, significance remained for the anorexic group on a digit coding task, two auditory-verbal learning tests, a measure of incidental visual learning and a measure of visuo-spatial / constructional functioning. These results suggested mild difficulties in cognitive functioning across neuropsychological domains which were not fully explained by the influence of emotional and other psychological factors. In the bulimic group, significance remained on a digit coding task and an omnibus attentional measure together with two dependent measures of auditory-verbal learning. There was also a trend for poorer performance on tests of visuo-spatial/constructional functioning. These results were largely explained by the effects of emotional variables on attentional processes. The results of cognitive test performance in anorexia and bulimia were discussed with reference to previous studies and with reference to clinical practice.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (D.Clin.Psy.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available