The German online SZ-online (Süddeutsche) reports that a dean of a business school has said that the amount of plagiarism has sharply decreased since they started using plagiarism detection software.
Now, I know of no method for actually measuring the amount of plagiarism, as we can only measure the plagiarisms that we actually find. And the intermediate results of my plagiarism detection software test are not encouraging.
It may be that this works as a psychological deterrent - but as soon as students wise up to the fact that the software doesn't catch everything, things will probably return to normal.
Or is anyone aware of any research that a) measures the actual amount of plagiarism or b) that detection software works as a deterrent?
In lieu of scientific findings, this is just wishful thinking.