Tedford W H, Bergquist S L, Flynn W E
J Gen Psychol. 1977 Jul;97(1st Half):145-9. doi: 10.1080/00221309.1977.9918511.
Slides were made from Munsell color chips in three sizes, four hues, and two chromas; all had the same intensity. A direct-comparisons, forced-choice procedure was used with 100 male and female volunteers from psychology courses. When pairs of slides had the same size and chroma, the order of decreasing apparent size was red-purple, yellow-red, purple-blue, and green. At chroma/8, all comparisons were significant except yellow-red over purple-blue. At chroma/4, the same order was found, but the effect was not pronounced. When pairs were made up of identical hues but different chromas, the square with chroma/4 (less saturation) appeared significantly larger.
幻灯片由三种尺寸、四种色调和两种彩度的孟塞尔色卡制成；所有色卡的明度都相同。对来自心理学课程的100名男女志愿者采用了直接比较、强制选择程序。当幻灯片对具有相同尺寸和彩度时，表观尺寸递减顺序为红紫色、黄红色、紫蓝色和绿色。在彩度/8时，除黄红色与紫蓝色比较外，所有比较均具有显著性。在彩度/4时，发现了相同的顺序，但效果不明显。当配对由相同色调但不同彩度组成时，彩度/4（饱和度较低）的方块显得明显更大。
