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在神经性厌食症中测试视觉自我误解,使用对称的身体尺寸估计范式
Stephen Gadsby1, Regine Zopf2, Kevin R Brooks3,4
1Centre for Philosophical Psychology, Department of Philosophy, University of Antwerp, Antwerp, Belgium.
The International journal of eating disorders
|August 14, 2023
概括
神经性厌食症 (AN) 的女性高估了自己的身体大小,但这不仅仅是由于视觉误解. 一个新的对称身体尺寸估计 (s-BSE) 范式表明,响应偏差显著影响这些估计.
科学领域:
- 心理学 心理学 心理学
- 认知神经科学 认知神经科学
- 饮食障碍 研究 研究 研究
背景情况:
- 精神性厌食症 (AN) 患者经常报告对自己的身体大小有扭曲的看法,经常认为自己超重.
- 之前使用身体尺寸估计任务的研究表明过高估计,但潜在的原因 - - 视觉误解与响应偏差 - - 仍然不清楚.
研究的目的:
- 要区分视觉误解和响应偏差在身体尺寸高估在妇女与AN.
- 引入和验证对称身体尺寸估计 (s-BSE) 范式,作为这种区别的新方法.
主要方法:
- 这项研究采用了s-BSE范式,比较了一项常规任务 (将矩形调整为体宽) 与一个转换任务 (将体宽调整为矩形).
- 参与者包括被诊断患有AN的妇女 (n=14) 和没有饮食障碍的妇女的对照组 (n=40).
主要成果:
- 在常规任务中,AN和对照组都高估了身体大小,重复了先前的发现.
- 在转移任务中,患有AN的参与者显著调整了他们的身体照片,使其看起来更宽,表明了反应偏差,而不是仅仅是视觉误解.
结论:
- 这些发现挑战了视觉误解在身体尺寸高估中对AN妇女的排他性作用.
- 结果表明,在AN和对照组中,响应偏差对身体尺寸误估有显著的贡献.
- s-BSE范式为未来的研究提供了一种有价值的工具,以隔离对身体尺寸估计的非感知影响.
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