[JustSayNoToNannies]

Did you post those excerpts because you think they call into question the study's conclusions? If so, you're in way over your head.

[Alaska Wolf]

Did you post those excerpts because you think they call into question the study's conclusions?

The study can conclude whatever it wants. I would trust a trained dog over a university professor or graduate student any day. Obviously you wouldn't. Hopefully you'll never need the services of a guide or service dog.