Ittelson W H
Department of Psychology, University of Arizona, Tucson 85721.
Perception. 1993;22(7):855-61. doi: 10.1068/p220855.
A mirror optically reverses the axis perpendicular to its surface, but apparent reversals (eg right-left) can be seen parallel to the surface. This poses a perceptual problem which Ittelson, Mowafy, and Magid resolved by concluding that an object appears to differ from its mirror image by an apparent reversal along its axis of greatest symmetry. Three papers--two included in this discussion (by Haig and by Morris), and an earlier one by Gregory--that disagree with this conclusion are examined, and arguments advanced in them are shown to be unconvincing. The question of apparent mirror reversals is then discussed in more detail.
镜子会在光学上反转垂直于其表面的轴，但在与表面平行的方向上会出现明显的反转（如左右反转）。这就带来了一个感知问题，伊特尔森、莫瓦菲和马吉德通过得出这样的结论解决了这个问题：一个物体与其镜像在沿其最大对称轴线方向上存在明显的反转，从而显得有所不同。本文考察了三篇不同意这一结论的论文——两篇纳入本次讨论（黑格和莫里斯所写），以及一篇更早的格雷戈里所写的论文——并表明其中提出的论据并不令人信服。然后更详细地讨论了镜像明显反转的问题。
