For many animals, siblings are a key component of their social environment during early life. Previous research has shown that the early social environment is important, but it has not yet been clear ...

DEAR ABBY: I am the oldest of three. We grew up in an abusive alcoholic family. I’m considered the “failure” of the family because I don’t drink. I graduated from college, work full time, got married ...

All siblings disagree and bicker at some point. It would be nearly impossible for anyone to live within the same household as another person and always agree. This is especially true for children ...