Теоретическая грамматика английского языка (Theoretical Grammar of the English language) - страница 11

(Blokh, 2000).

In order to overcome the demonstrated lack of rigour in the differentiation of qualitative and relative adjectives, Prof. M.Y. Blokh introduced an additional linguistic distinction which is more adaptable to the chances of usage. The suggested distinction is based on the evaluative function of adjectives. Thus, all the adjectives can be used either evaluatively or specificatively, depending on the context. Prof. Blokh states that it emphasizes the fact that the morphological category of comparison (comparison degrees) is potentially represented in the whole class of adjectives, and not only in the class of qualitative adjectives.