Reference of terms is important. And the reference of terms is reference of concepts. Dcfinitory determination of concepts does not allow for determination of singular referential acts. Referentiality of a concept should be determined by ability of organims to identify, or range individuals as instances of these concepts. Referentiality of concepts should be determined by considering the importance of psychological findings concerning the strukture of concepts such as findings about the pro to typicality of exemplars. Cognitive mechanism of basic categorical perception should be moved into an account of (conceptual) reference.
