I do think is a matter of subject and experience. In my field, theoretical formalities will not be enough to review a respective contribution; practical insights into the research problem and deep knowledge of the mathematical method are required. Concerning attitude and thinking, we should be open to new approaches, but real breakthroughs are rare. Normally, we will carefully add stone to stone, by practicing our craft.
Being a knowledgeable and renowned researcher of the field must be a requisite. Having a Phd or a Doctor’s Degree in the area or in a similar subject is usually required as well.
The person should have a good deal of experience in the field as indicated by publications. While the actual number of years of experience is not as important they should, in my opinion, have 5 years or more of post-PhD experience.
I think you do not necessarily need to get a PhD or other advanced degree but you must have credentials to consider yourself a peer or an expert in a particular topic area. Ideally, peer reviewers have published themselves on this subject and have a systematic background both in quantitative and qualitative research methods.
I am totally commend all the above respect colleagues answers, and I want scientifically to add it is preferable for reviewer to be have a PhD (researcher experiences) holder with qualification of assistant professor or a full professor degree.
PhD holders in a given field of knowledge are qualified enough to review a paper on a condition that they have a good experience& have published a significant number of valuable papers in that particular speciality.
I think that you don't necessarily need to have a PhD or other advanced degree but must have qualifications to consider yourself a expert in a specific subject area. Ideally, peer-reviewers have published in the subject are themselves, and have a methodological background in either quantitative or qualitative research methods.
In my opinion, if you want to do peer-reviews, the first step is publishing something in a peer-reviewed journal. Otherwise, no one will know you're there.
This doesn't mean someone who isn't publishing is never qualified to provide a peer review. But if editors don't know you, and you haven't published anything yourself, they have no way to evaluate if you are qualified to provide a good review.
I feel the peer reviewers needs to be qualified as primary criteria. it does not matter what degree he/she holds. its the knowledge in the specific domain required to do the peer review. Not all the so called degree holders supposed to have in depth knowledge in the specific domain until unless the person updates himself and goes deep into the subject. it is the general opinion that who holds higher degree, they are supposed to have knowledge in that area. it is not necessary it applies all who holds the degree.
Journals send papers to professors who are not really expert in that field and may not have enough time to review. They usually agree to review and ask a PhD student to do the job. It is not justified though. But professors have no time to even review the papers of their own students. How can we expect them to review papers form "outside"!
A person who holds a doctorate degree and the rank of assistant professor or professor in a particular specializationhas the qualification/ position to REVIEW the High Qualityresearch Articles.
Having a PhD degree ensures the minimum eligibility and competence of being a reviewer. This is not because the degree itself but the series of steps and experience the PhD holder passes or gather. During the process of achieving the highest academic degree, (s)he has to know the true spirit of reviewing any manuscript and the philosophy towards achieving the objective of a particular research.
Next comes the publishing experience.
Then comes the individuality and the popularity in the related discipline.
Then comes the natural skill, flair, wisdom and mindset for doing the job carefully, perfectly, unbiasedly and in time.
A perfect blend of all these qualities makes a good reviewer.
As per my opinion, if you are interested to do peer-review for research article first you should publish your research article in a peer-reviewed journal. Then and then only people are know you are expert in respective field,
My best answer would be that, the reviewer should have sufficient experience in the same or related field (as judged from his/her publications) and should be able to understand the constraints of the researcher (whose work has to be reviewed) without any comprise on the critical analytical methods.
Good question. Your answer better. To have a degree is no sufficient, you need experience in research, more so when the topic is interdisciplinary and requieres a wide perspective
I think that the review of such research should be limited to people who hold the PhD degree with the title of professor and work in universities or research centers exclusively.