Let me guess, you found it on the internet?
Seriously, I've never read that, but I'm sure for some it's true. I could see that happening in a forced accountability situation like a job and an amiable personality. That seems like the logical place they came up with those results, in the workplace.
Motive is also a key component. As the great, late, Jim Rohn once said, "When the why gets strong, the how gets easy".
I really don't think it makes much difference for me. If I want something bad enough, I don't need someone to spur me along. I think accountability would benefit me more with goals of lower value.