ok, and? We've also seen "how many pingpong balls can fill a school bus" from the likes of Google. They eventually learned it was not a good filter. If a personality test truly is better, I want to know because I'm involved with hiring at my company.
What qualifies Bridgewater's take on this? How have they leveraged it and to what effect? Correlation, causation, all that jazz too - if I want to be taller, I should obviously play basketball.
[edit] you edited your response as I posted mine :)
Yes, I'm assuming what a personality test is because you've given us very little to go on. Give us more. Honestly, if it is better, I'm sure others want more than "this practice is good." We want to know how, what, and why.