What is a key feature of the triangle test in discrimination testing?

The key feature of the triangle test in discrimination testing is that participants must identify the odd sample out of three presented samples. In this test, three samples are offered to the participants, two of which are identical, while one is different. The challenge for the participant is to correctly identify which sample does not belong or is different in some way, such as flavor, aroma, or texture. This focus on distinguishing the outlier is what makes the triangle test distinct and useful for evaluating sensory differences between products.

Understanding this aspect of the triangle test helps clarify its application in sensory analysis. It is designed specifically to assess perceptual differences and is often used to evaluate changes in formulations, quality control, or product development where it is crucial to determine if a noticeable difference exists between the products being tested.