6. Our advice

Take great care when obtaining perceptual data and organizing tests. It is imperative to obtain the most reliable measurements possible, so as to be able to explain their variability a posteriori by intrinsic product attributes. The subject panel must disregard any preference judgments (the collection and use of preference data is covered in the "How to take preferences into account in product design? [FIC 1118] ), and concentrate on the terms and associated perceptions. In particular, take care to balance the order in which products are presented to subjects, so...