"And so what we found is that actually corresponds to some of these genetic regions. This is really exciting because it suggests that there might be this common mechanism between some of these developmental delays that we've seen in humans, especially with Williams-Burnham syndrome and it's incredibly pro-social behavior that makes dogs unique."
https://en.wikiquote.org/wiki/The_Mayor%3A_A_Chronicle_of_Williams_Syndrome%2C_with_Josh_Duffy