Xanthines Create Talk0 Category page This page needs content. You can help by adding a sentence or a photo! Add to this page! Physical and psychological effects of caffeine “Assessment | Biopsychology | Comparative | Cognitive | Developmental | Language | Individual... Theobromine Pages in category "Xanthines" The following 2 pages are in this category, out of 2 total. P Physical and psychological effects of caffeineT Theobromine Retrieved from "http://psychology.wikia.com/wiki/Category:Xanthines"