The following is for anyone who hasn't heard of wikipedia:
Wikipedia is often a good place to begin research. It can often provide a set of words that you can use to look for scholarly works that can provide "good, non-anecdotal data".
http://en.wikipedia.org/wiki/Academic_dishonesty
This article features words like: Plagiarism, fabrication, deception, cheating, bribery, sabotage, professorial sabotage, and personation. These may help you in your search for "good, non-anecdotal evidence".
Wikipedia also provides links to "good, non-anecdotal evidence" from time to time, and calls these links "references". These references can often be accessed online, but sometimes require you to access a physical book.
http://en.wikipedia.org/wiki/Academic_dishonesty#References
The things that you read in wikipedia are not necessarily the truth. Wikipedia has information and mis-information on many topics.