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Definition psychological nominalism: every consciousness of species, resemblances, facts, i.e. abstract entities, is a linguistic matter. The perception of similarities and also of facts presupposes the process of acquisition of language use.
Psychological nominalism/Sellars: Thesis: there is no consciousness of a logical space that precedes the acquisition of language and would be independent of it.
Der Empirismus und die Philosophie des Geistes Paderborn 1999