... looks. (Thurstone 1947, P. 55) Suggestions for Future Research Other PCA-like techniques can be used for alternative consonance- methods. PCA for categorical data, e.g. Princals (see Gifi ... ID-DLO, the Institute for Animal Science and Health (Lelystad, the Netherlands), leading their sensory laboratory. ID-DLO is one of the major research institutes on animal production. In their ... Stone and Side1 1985, 1993 for QDA, Meilgaard et al. 1990 for Spectrum). These two methods have in common that a standard vocabulary of descriptive attributes is formed. These attributes are...