Recent years have seen the emergence of research integrity sleuths, who devote time to detecting misconduct in academic research publications, a major source of which comes from paper mills, satisfying the "publish or perish" urge. Their methods include detection of plagiarism, spotting red flags that mark the possibility of fraud, such as doctored and reused images, tortured phrases, unlikely collaborations, suspicious looking email addresses, and citations that appear irrelevant, and the use of statistical tests to detect fabricated data and lack of expected randomness.
Jeffrey K Aronson (Fri,) studied this question.
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