High Quality Content by WIKIPEDIA articles! A preprint is a draft of a scientific paper that has not yet been published in a peer-reviewed scientific journal. Publication of manuscripts in a peer-reviewed journal often takes weeks, months or even years from the time of initial submission, because manuscripts must undergo extensive reviewer critique. The need to quickly circulate current results within a scientific community has led researchers to distribute documents known as preprints, which are manuscripts that have yet to undergo peer review. The immediate distribution of pre-prints allows authors to receive early feedback from their peers, which may be helpful in revising and preparing articles for submission. Since 1991, preprints have increasingly been distributed electronically on the Internet, rather than as paper copies. This has given rise to massive preprint databases such as arXiv.org and institutional repositories.

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