“…Note 3), weight (Goude, 1962), area (Ekman, Goude, & Waern, 1961), and odor intensity (Engen & Lindstrom, 1963). C2 was also satisfied for unidimensional similarity estimates of pitch (Eisler & Ekman, 1959), visual area (Ekman, Goude, & Waern, 1961), and heaviness (Eisler, 1960). However, C2 was rejected for ratio estimation judgments of angles (Goude, 1962), brightness (Fagot, Stewart, & Kleinknecht, 1975), heaviness (Eisler, 1960), and darkness (Ekman, Goude, & Waern, 1961).…”