PsycINFO is the primary tool used by psychologists to find information related to all aspects of psychology.
Produced by the American Psychological Association (APA) it identifies scholarly journal articles, book chapters, books and dissertations, and is the largest resource devoted to peer-reviewed literature in behavioral science and mental health. Ninety-nine percent of the covered material is peer-reviewed.
The databases listed here all contain content that may be useful for psychological research.
In secondary sources, authors analyze and interpret primary source materials.
Secondary sources can be scholarly or popular. Scholarly sources (sometimes called "academic" or "peer-reviewed" sources) are written by and for experts and typically include bibliographies and citations. Popular sources are written for a general, non-expert audience and can be authored by anyone.