The PsycINFO , database, American Psychological Association’s (APA) renowned resource for abstracts of scholarly journal articles, book chapters, books, and dissertations, is the largest resource devoted to peer-reviewed literature in behavioral science and mental health. It contains nearly 3 million citations and summaries dating as far back as the 1600s. Journal coverage, which spans from the 1800s to the present, includes international material selected from more than 2,400 periodicals.