Predebon J
Department of Psychology, University of Sydney, NSW, Australia.
Perception. 1996;25(7):773-81. doi: 10.1068/p250773.
The effect of selective amputations of the angle components in the wings-in (underestimated) and wings-out (overestimated) forms of the Müller-Lyer illusion was examined in two experiments. The stimulus figures consisted of one, two, or four angles. In experiment 1 the method of paired comparisons was used to scale the figures on the psychological continuum of length, and in experiment 2 the method of reproduction was used to obtain quantitative measures of illusion magnitude. There was good agreement between the scaling and the length-reproduction measures of the illusion. The illusory effects in all figures were significant, and the extent of the underestimation and overestimation of the wings-in and wings-out figures, respectively, increased as the number of angles increased. In general, selective amputation of the angle components produced similar patterns of illusory effects in the wings-in and wings-out figures. These findings are discussed with reference to the issue of whether the two forms of the conventional (ie four-angle) Müller-Lyer illusion are similar or distinct illusion types.
在两项实验中，研究了对缪勒-莱尔错觉的内收翼（低估）和外展翼（高估）形式中角度成分进行选择性切除的效果。刺激图形由一个、两个或四个角组成。在实验1中，采用配对比较法在长度的心理连续体上对图形进行缩放，在实验2中，采用复制法获得错觉大小的定量测量。错觉的缩放测量和长度复制测量之间有很好的一致性。所有图形中的错觉效应都很显著，内收翼和外展翼图形的低估和高估程度分别随着角度数量的增加而增加。一般来说，角度成分的选择性切除在内收翼和外展翼图形中产生了相似的错觉效应模式。结合传统（即四角）缪勒-莱尔错觉的两种形式是相似还是不同的错觉类型这一问题，对这些发现进行了讨论。
