I think this is a really interesting test, because I've heard many theories as to why people can't seem to tell people who are from various asian countries apart. I scored very highly with faces that were Japanese and very poorly with faces that were Korean or Chinese.

I've heard from various Thai and Chinese friends that they have similar difficulties with Caucasian people, even to the extent that one friend said we all looked white and hairy.

Anyhow, I'm interested in the data they collect.