A Thurstonian comparison of the Tetrad and Degree of Difference tests

摘要: Abstract The recurring need to assess product reformulations has kept difference testing at the forefront of sensory science. Within realm testing, Tetrad test risen in popularity recently as its superiority over Triangle been demonstrated both theory and practice. But it remains compare detail with other commonly used methods such Degree Difference (DOD) test. In this paper, we provide a comparison by considering, from theoretical perspective, differences between power precision for DOD tests. particular show that, theoretically range effect sizes likely be interest consumer research, is more powerful precise than Even so, if there substantially perceptual noise two additional stimuli, possible that performance could surpass To investigate last statement, quantify required negate advantage