It’s good they did this study but just ask any dog lover or animal lover in general and they could have given you the same info.
On average most dogs are simply better beings than most people on average. It’s just the way it is.
Better beings? I’m sorry, do you see groups of dogs getting together to feed the less fortunate dogs? Are dogs working at curing cancer, AIDS, diabetes, etc.
Do dogs build hospitals to take care of sick humans?
Better beings? Gimme a break.