Peer reviewed materials are publications reviewed by "experts in the field" or referees prior to the publication of the material. After reading and evaluating the material, the referee informs the publisher if the document should be published or if any changes should be made prior to publication. Peer reviewed materials are also referred to as . Peer reviewed materials are significant to the research and the literature of most academic fields because they assure readers that the information conveyed is reliable and timely.
When a source has been peer-reviewed it has undergone the review and scrutiny of a review board of colleagues in the author's field. They evaluate this source as part of the body of research for a particular discipline and make recommendations regarding its publication in a journal, revisions prior to publication, or, in some cases, reject its publication.
Peer review isn't perfect! Sometimes reviewers miss things. Whether it's unintentional mistakes or deliberate fraud, misinformation can get through the process but hopefully is caught post-publication by eagle-eyed researchers and readers.