Doll H A, Fairburn C G
Department of Psychiatry, University of Oxford, United Kingdom.
Int J Eat Disord. 1998 Nov;24(3):267-73. doi: 10.1002/(sici)1098-108x(199811)24:3<267::aid-eat4>3.0.co;2-k.
This study was designed to test two competing hypotheses regarding bias in self-report of weight and height in bulimia nervosa.
General population samples of 102 young women with bulimia nervosa and 204 age and social class-matched healthy control women were recruited. Subjective and measured values of height and weight were obtained and compared within and between the groups.
The healthy control subjects reported that they were lighter and taller than they actually were, and the degree of this discrepancy was related both to their actual weight and, more strongly, to the difference between their actual and desired weight. In contrast, the bulimia nervosa subjects showed little reporting bias.
The results support the hypothesis that the intense interest of bulimia nervosa subjects in their weight is expressed by heightened precision of their self-report. Epidemiological studies of bulimia nervosa can capitalize on this cognitive "distortion."
本研究旨在检验关于神经性贪食症患者体重和身高自我报告偏差的两种相互竞争的假设。
招募了102名患有神经性贪食症的年轻女性以及204名年龄和社会阶层匹配的健康对照女性作为一般人群样本。获取了身高和体重的主观和测量值，并在组内和组间进行比较。
健康对照受试者报告的体重比实际体重轻，身高比实际身高高，这种差异程度既与她们的实际体重有关，更与实际体重和期望体重之间的差异有关。相比之下，神经性贪食症患者的报告偏差较小。
结果支持了这样的假设，即神经性贪食症患者对体重的强烈关注通过其自我报告更高的精确性得以体现。神经性贪食症的流行病学研究可以利用这种认知“扭曲”。
