Williamson D A, Davis C J, Goreczny A J, Blouin D C
J Abnorm Psychol. 1989 Feb;98(1):97-9. doi: 10.1037//0021-843x.98.1.97.
This study evaluated body-image distortion and ideal body-size preferences in 423 nonbulimic women and 108 bulimics. Analyses of covariance were utilized to compare the bulimic and nonbulimic groups on measures of current and ideal body size. Weight was used as a covariate to evaluate the influence of actual body size on perception of current body size and selection of ideal body size. Bulimics chose current body sizes that were significantly larger than those picked by nonbulimics regardless of actual body size. Bulimics also chose thinner ideal body sizes than did nonbulimics, regardless of actual body size. These results suggest that body-image distortion and extreme preference for thinness are a fundamental characteristic of bulimia nervosa. These results were discussed in terms of how perception of a large body size and preference for a very thin body size might interact to produce a high degree of dissatisfaction and overconcern with body size in bulimia nervosa.
本研究评估了423名非暴食症女性和108名暴食症患者的身体意象扭曲及理想体型偏好。采用协方差分析比较暴食症组和非暴食症组在当前体型和理想体型测量指标上的差异。体重作为协变量，以评估实际体型对当前体型认知及理想体型选择的影响。无论实际体型如何，暴食症患者选择的当前体型显著大于非暴食症患者。无论实际体型如何，暴食症患者选择的理想体型也比非暴食症患者更瘦。这些结果表明，身体意象扭曲和对瘦的极端偏好是神经性贪食症的一个基本特征。还从对大体型的认知和对极瘦体型的偏好如何相互作用，从而在神经性贪食症中产生对体型的高度不满和过度关注这方面对这些结果进行了讨论。
