Babysitters, tuber-diggers: Studies show the rise of grandmas helped babies thrive — and evolve
For decades, a "man the hunter" theory of early humans prevailed, with the image of societies and interactions revolving around bagging big game. But new research suggests that women likely brought home a lot more food. When grandmothers were added to the mix, babies ate better and may have developed better social skills to manage their multiple caregivers.
"Human children are adapted for cooperation … in ways that apes aren't," says a psychologist.