This article talks about Canine Companions, but this would work just as well for Guide Dog puppies and could save service dog organizations a lot of money. I wonder if, ten years down the line, part of puppy raising will be taking your adolescent pup to be scanned. Or would they wait until the dog went back to college. I think I'd have it done locally for any pups raised in or near big cities.
The gist of it is that dogs that are more excitable can be detected by the machine. Predicting which dogs will make it through training and which will fell rose from 47% to to 67% with this fine test.
I think I want slightly better numbers than a 2/3 success rate before my babies are deemed a success or failure though.