Title: Rectangle Pairs SS Group Source: Borg and Leutner (1983) Description: Average dissimilarity ratings of 21 persons who each evaluated 16 rectangles with varying size and shape. Each subject rated all possible 120 stimulus pairs twice on a scale with end categories 0=‘equal, identical’, and 9=‘extremely different’. The stimuli were designed as follows Stimulus Width Height 1 3.0000 3.0000 2 3.5303 3.5303 3 4.0607 4.0607 4 4.5910 4.5910 5 3.8839 2.1161 6 4.4142 2.6464 7 4.9445 3.1768 8 5.4749 3.7071 9 4.7678 1.2322 10 5.2981 1.7626 11 5.8284 2.2929 12 6.3588 2.8232 13 5.6517 0.3483 14 6.1820 0.8787 15 6.7123 1.4090 16 7.2426 1.9393