Effect of stimulus temperature on the perceived sweetness of sucrose in humans. Data represent magnitude estimates (ordinate) for a sucrose concentration series (abscissa) tested at 4°, 12°, 20°, 28°, 36°, and 44°C. Solid lines connect points representing responses to sequential concentrations measured at one temperature. Slopes for straight-line fits to data points acquired from 4° to 44°C are as follows: 1.31, 1.40, 1.02, 1.01, 0.89, and 0.80. Reprinted from Bartoshuk et al. (1982) with permission from the publisher.