Philosophy by era Create Talk0 Category page This page needs content. You can help by adding a sentence or a photo! Add to this page! “ Assessment | Biopsychology | Comparative | Cognitive | Developmental | Language | Individual... 20th-century philosophy Pages in category "Philosophy by era" This category contains only the following page. 2 20th-century philosophy Retrieved from "http://psychology.wikia.com/wiki/Category:Philosophy_by_era"