Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK Department of Psychology, University of York, UK.
Br J Psychol. 2011 Aug;102(3):340-54. doi: 10.1348/000712610X524291. Epub 2011 Mar 16.
Attentional biases may influence the eye-movements made when judging bodies and so alter the visual information sampled when making a judgment. This may lead to an overestimation of body size. We measured the eye-movements made by 16 anorexic observers and 16 age-matched controls when judging body size and attractiveness. We combined behavioural data with a novel eye-movement analysis technique that allowed us to apply spatial statistical techniques to make fine spatial discriminations in the pattern of eye-movements between our observer groups. Our behavioural results show that anorexic observers overestimate body size relative to controls and find bodies with lower body mass indexes more attractive. For both judgments, the controls' fixations centre on the stomach, but the anorexic observers show a much wider fixation pattern extending to encompass additional features such as the prominence of the hip and collar bones. This additional visual information may serve to alter their behavioural judgments towards an overestimation of body size and shift their ideal body size towards a significantly lower value.
注意力偏差可能会影响判断身体时的眼球运动，从而改变做出判断时所采集的视觉信息。这可能导致对体型的高估。我们测量了 16 名厌食症患者和 16 名年龄匹配的对照组在判断体型和吸引力时的眼球运动。我们将行为数据与一种新颖的眼球运动分析技术相结合，该技术允许我们在观察者群体的眼球运动模式中应用空间统计技术进行精细的空间区分。我们的行为结果表明，厌食症患者相对于对照组高估了体型，并且发现体重指数较低的身体更有吸引力。对于这两种判断，对照组的注视点集中在胃部，但厌食症患者的注视模式要广泛得多，延伸到包括臀部和锁骨等其他特征。这种额外的视觉信息可能会改变他们对体型的行为判断，使他们的理想体型向明显更低的值偏移。
