"Infants as young as nine months old prefer individuals who are nice to people like them and mean to people who aren’t like them, according to a new study publi

"Infants as young as nine months old prefer individuals who are nice to people like them and mean to people who aren’t like them, according to a new study published in Psychological Science, a journal of the Association for Psychological Science." https://www.psychologicalscience.org/news/releases/babies-prefer-individuals-who-harm-those-that-arent-like-them.html https://www.psychologicalscience.org/news/releases/babies-pr... On the other hand: "People have found that even by 18 months of age, children have expectations about how things should be shared fairly." https://www.bbc.com/news/science-environment-19421644 https://www.bbc.com/news/science-environment-19421644