Peer review (also known as refereeing) is a process where other scholars in the same field (peers) evaluate the quality of a research paper before it's published. The aim is to ensure that the work is rigorous and coherent, is based on sound research, and adds to what we already know.
The purpose of peer review is to maintain the integrity of research and to ensure that only valid and quality research is published.
Your lecturers will often require you to use information from academic journal articles that are peer reviewed (also known as refereed).
Peer reviewed articles are credible sources of information. The articles have been written and reviewed by trusted experts in the field, and represent the best scholarship and research currently available.