I could give examples of the consequences of lying on research including losing one's position, professional reputation, and even having to pay back grant money, but, I agree with Earl's perspective. Negative rewards are not the crux of the issue, but again, it is integrity, without it, you might just as well go in to politics or the media and forget about science. When was the last time you saw a spot on national news that dealt with the great life and accomplishment of some teacher, scientist, coach, etc. What a world, what a world. The only hope in such a world of influences is to have and keep one's integrity, there really is nothing else of greater importance.
Court is about winning and losing rather than discovery.
It's odd how unrelated experiences cluster. This Wednesday a group of faculty drawn from many disciplines on our campus sat around in a scheduled seminar to discuss the problem of ethical academic practices among undergraduates and how one teaches that behavior. The discussion was not limited to plagiarism, although it was mentioned prominently as a likely sin. There were no students present. Much of what was said at the seminar at least echoes comments on the thread.