Group theory Category page Create Classic editor Talk0 This page needs content. You can help by adding a sentence or a photo. Add to this page!orSearch for "Group theory" “Assessment| Biopsychology| Comparative| Cognitive| Developmental| Language| Individual... Numbers (numerals) Pages in category "Group theory" This category contains only the following page. N Numbers (numerals) Retrieved from "http://psychology.wikia.com/wiki/Category:Group_theory"