Mental retardation organizations 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... Renpenning's syndrome Pages in category "Mental retardation organizations" This category contains only the following page. R Renpenning's syndrome Retrieved from "http://psychology.wikia.com/wiki/Category:Mental_retardation_organizations"