What Is the Difference Between Duo Trio and Triangle Tests

In a triangle test, participants are told to taste a tray containing three sweetened samples (two identical, one different) and to pick the odd sample out, whereas in a duo-trio test, participants are told to match samples to a reference sample (Francois and Sauvageot 1988; Meilgaard, Carr, and Civille 2006).

What is a duo-trio test?

A Duo-Trio Test is an overall difference test which will determine whether or not a sensory difference exists between two samples. This method is particularly useful: To determine whether product differences result from a change in ingredients, processing, packaging, or storage.

What are triangle tests?

Triangle test. The triangular or triangle test is a discrimination test designed primarily to determine whether a perceptible sensory difference exists or not between two products. It uses trial sizes and processes to generate sufficient good quality data for statistical analyses.