"New analyses of the hundreds of thousands of technical manuscripts submitted to arXiv, the repository of digital preprint articles, are offering some intriguing insights into the consequences—and geography—of scientific plagiarism. It appears that copying text from other papers is more common in some nations than others, but the outcome is generally the same for authors who copy extensively: Their papers don’t get cited much.
The map above, prepared by ScienceInsider, takes a conservative approach. It shows only the incidence of flagged authors for the 57 nations with at least 100 submitted papers, to minimize distortion from small sample sizes. (In Ethiopia, for example, there are only three submitting authors and two of them have been flagged.)"