A recent cover story in The New York Times Magazine by Susan Dominus, the author of the new book, The Family Dynamic, explored the underappreciated but powerful and long-lasting influence siblings ...

Why kids fight: Sibling rivalry stems from evolutionary drives, competition for resources, and differences in personality, birth order, and family circumstances. Conflict as growth: When handled with ...

If you have ever googled the best time to have a second baby, you know the internet has opinions. Some say close-in-age siblings end up inseparable. Others insist that more years between kids protects ...