Hagman Jennifer, Gardner Rick M, Brown Dana L, Gralla Jane, Fier Jennifer M, Frank Guido K W
Eating Disorder Program, Children's Hospital Colorado, University of Colorado School of Medicine, Denver, CO, 80045, USA.
Department of Psychology, University of Colorado Denver, Denver, CO, 80217-3364, USA.
Eat Weight Disord. 2015 Dec;20(4):449-55. doi: 10.1007/s40519-015-0193-0. Epub 2015 May 1.
Body size overestimation is a fundamental feature in anorexia nervosa (AN). There have been inconclusive findings about the extent to which this feature distinguishes psychopathology and some authors have argued that overestimation may be a function of lower body mass index (BMI).
We examine body size estimation accuracy and body dissatisfaction in 74 females with AN and 11 age-matched female controls using two well-established psychophysical procedures.
Participants with AN overestimated their body size more and had greater body dissatisfaction than controls. Size accuracy was found to be independent of BMI and correlated with body dissatisfaction and drive for thinness in participants with AN.
We conclude that overestimation of body size in AN is related to the psychopathology associated with the disorder and is not due to any perceptual tendency for people with lower BMI to overestimate their body size. We discuss the implications of these findings for treatment of AN.
身体大小高估是神经性厌食症（AN）的一个基本特征。关于这一特征在区分精神病理学方面的程度，研究结果尚无定论，一些作者认为高估可能是较低体重指数（BMI）的一种表现。
我们使用两种成熟的心理物理学程序，对74名患有神经性厌食症的女性和11名年龄匹配的女性对照者进行身体大小估计准确性和身体不满情况的研究。
与对照组相比，患有神经性厌食症的参与者对自己身体大小的高估更严重，且身体不满程度更高。研究发现，大小准确性与BMI无关，与患有神经性厌食症的参与者的身体不满和追求瘦身的动力相关。
我们得出结论，神经性厌食症患者对身体大小的高估与该疾病相关的精神病理学有关，并非由于BMI较低的人存在任何高估自己身体大小的感知倾向。我们讨论了这些发现对神经性厌食症治疗的意义。
