  For Dorp and other later logicians ordinary demonstrative pronouns such as ‘this’ similarly require the presence of an identifying concept. This raised the issue of what in the mind corresponds to the pronoun itself, an issue which relates to the more general issue of the mental correlate of syncategorematic terms, that is, terms which perform some logical function, as opposed to categorematic terms, or terms such as nouns and adjectives, which fall under Aristotle’s categories. Some people apparently held that there are no pronouns in the mind.  Hence one can argue that a demonstrative pronoun is a disguised categorematic term, and that the mental correlate of “This man runs” is “The man Socrates runs.” On the more common view, pronouns are subordinated to special demonstrative or relative acts in the mind. If the pronoun is joined to a noun in the spoken phrase, then it represents a purely syncategorematic act in the mind. If it appears alone in the spoken phrase, there are two possibilities, as John Dorp argued. It can be taken to be subordinated to a mental phrase containing both a syncategorematic act and a name, and this case would be legitimate. Alternatively, it could be taken as purely syncategorematic, and this use would be illegitimate, because there would be no sign of the thing pointed to, and a purely syncategorematic term cannot be the subject of a proposition. You cannot successfully think “This is running” without identifying the ‘this’ in some way.  However, it seems that the identification need not involve a sortal concept. A singular concept is enough. 