The study programmed four artificial intelligence agents to play single-player Age of Mythology with four distinct play styles: aggressive, defensive, normal and neurotic, the last of which was saddled with ostensible drawbacks such as "irrational assessment of resource value" and "tendency to resort to extreme playing styles." Despite these drawbacks, though, the neurotic AI played itself to a perfect 7-0 record and, surprisingly, achieved wins 3-12 minutes faster than its opponent AI, on average. The takeaway from all this? If you see Woody Allen in the Xbox Live lobby, beware!
View - Study presentation slides (PDF)
Read - Study summary at Mind Hacks