Looking at the article and the abstract, it seems equally plausible that we have just gotten a lot better recently at detecting fraud and plagiarism and error. Is there any reason that the study excludes that possibility?
Even if that's true, creating the perception that there are more people who cheat, is likely to encourage more people to cheat.
From Gene Expression by Razib Khan who some of you may also know from the old gnxp site or perhaps from his BHTV debate with Eliezer.
Link to original post.