GUIDING THE SWITCH FROM TRIANGLE TESTING TO TETRAD TESTING: TRIANGLE TO TETRAD

摘要: ABSTRACT Tetrad testing is theoretically more powerful than Triangle testing, yet the addition of a fourth stimulus raises questions – it possible that places such an additional demand on subjects theoretical advantage Tetrad test lost. In this paper, we provide guideline to compare results and Triangle. Specifically, roughly correct say as long effect sizes do not drop by one third for same stimuli, then remains test. We explain in terms perceptual noise, illustrate its use several examples discuss statistical considerations accompany use. To assist with evaluation, table finding variance Tetrad-based measurement size. Finally, show how Thurstonian framework helps us improve discrimination efficiency even when seek power. PRACTICAL APPLICATIONS Discrimination programs based might be made sensitive or efficient testing. This paper develops sensory scientists who are considering switch from The displays examples, discusses relevant considerations, provides helpful demonstrates theory can used already successful program.