Psychologism

1.1. Classification of types

In the context of the nineteenth century, ‘logic’ is a generic term to refer to formal logic, epistemology, and the philosophy of language or semantics. For this reason, within ‘logical’ psychologism, three specific forms can be distinguished: logical psychologism proper, semantic psychologism, and epistemological psychologism. This distinction makes it possible to avoid a series of typical confusions, the central point being that you can be a psychologist thinker in one case and not in the other, that is, you can be a logical psychologist thinker without being a semantic psychologist one (Mill), or be a semantic psychologist thinker without being an epistemological psychologist one (Brentano), or be an epistemological psychologist thinker without being a logical psychologist one (Fries).