Davi M, Doyle M A, Proffitt D R
University of Padua, Italy.
Percept Psychophys. 1992 Aug;52(2):151-60. doi: 10.3758/bf03206768.
This study was designed to assess the effects of symmetry and plane of presentation on the determination of the perceptual center of flat figures. Experiment 1 demonstrates the existence of effects in improving center determination, both in the number of sides of the shape and in rotational and reflective symmetry (confounded in the experiment). Experiment 2 shows that the presentation plane has no effect on center determination. In Experiment 3, we divide the effects of the two symmetry types, showing that rotational symmetry alone is as effective as the presence of both symmetry types--that is, the presence of symmetry axes is not very useful in finding perceived centers.
本研究旨在评估对称性和呈现平面对于确定平面图形感知中心的影响。实验1证明了在改善中心确定方面存在影响，这在形状的边数以及旋转和反射对称性方面（在实验中两者相互混淆）均有体现。实验2表明呈现平面对于中心确定没有影响。在实验3中，我们区分了两种对称类型的影响，结果显示仅旋转对称性与两种对称类型同时存在时的效果相同——也就是说，对称轴的存在对于找到感知中心并不是很有用。
