Morality: It’s not just for humans Latest research from Frans de Waal, one of the leading researchers on primate behavior. His latest research is looking at cooperation, fairness, and reciprocity among chimps. Most interestingly, it looks like chimps share with humans the tendency to yawn when someone else they know yawns, which is understood to be a sign of empathy. I am looking forward to his upcoming book on Bonobos and humanism.