Siblings often are tied together by logistical bonds, but can be careless or rough with one another because they assume their relationship is sturdier than it is. Some siblings are turning to therapy.

If this sounds familiar, you aren’t being immature – you are experiencing adult sibling rivalry, a phenomenon rooted in decades of shared history. While the “mature” response is usually to stay quiet, ...

Most Americans grow up with siblings, which means our siblings often know us longer than anyone else, longer than a spouse, longer than old friends. That does not mean sibling relationships don't ever ...