The PsycINFO database American Psychological Associations (APA) renowned resource for abstracts of scholarly journal articles, book chapters, books and dissertations, is the largest resource devoted to peer-reviewed literature in behaviorual science and mental health. It contains over 2.5 million citations and summaries dating as far back as the early 1800s. Journal coverage which spans from 1887 to present includes international material selected from more than 2 400 periodicals in more than 27 languages.