You can determine the relevancy of search results by asking these questions:
You have to realise that only seldom you will find a source exactly matching all your own questions. You will have to combine information from many sources to answer your questions.
The special LibGuide evaluating sources has more on how to evaluate information.
The reliability (scientific nature) of sources can be verified by three kinds of checks:
In the special LibGuide Evaluating sources you will learn how to deal with these matters
According to many, peer review, the system by which fellow experts judge the quality of a piece before publication is one of the pillars of science. Editors can never have enough expertise to judge submitted articles or books. Experts can. Without them knowing the identity of the author, they assess whether the piece meets the scientific norms: stating where the data originate from, a logical analysis, references to relevant sources. Besides they say what the article has to contribute to science. Peer reviewing an article is more about the question of a piece being written according to a good scientific method than about reviewers agreeing with the content. The advice to the editors will be either publishable, publishable with certain adjustments/ not publishable.
The peer rewiew system is subject to much criticism, although many people say that is the 'best worst system' we have. Criticism focusses on:
There are sites where authors share their experiences with the peer review of journals. The Dutch initiative SciRev is one of them.
Some journals, such as PLOS One (Public Library of Science One) are experimenting with new forms of peer review. Peer reviewers only indicate if the articles are written in the right method. Assessing the scientific interest is done at a later stage, by the readers. The use of this method leads to a speedier publication of many articles.