The sibling relationship, as any parent with two or more children knows, is an extraordinarily intense one: young brothers and sisters love and hate, play and fight, tease and mock each other with a devastating lack of inhibition.

Why do some siblings get along harmoniously and affectionately, while others constantly squabble? To what extent are parents responsible for differences in siblings' personalities, and how can they ease the tensions?

In this timely and unusual glimpse into the world of the child, Judy Dunn argues that in fighting, bullying, or comforting, very young...

The birth of a younger sibling can be a traumatic event for the older child. Unquestionably it places increased demands on parents and causes important changes in the inner balance of the family. Childrearing manuals are full of advice about how to get through this difficult time. But until now such advice has been based more on clinical guesswork than on direct observation of what really happens to families when a sibling is born.

With the arrival of Siblings, this gap in our knowledge is admirably filled. Judy Dunn and Carol Kendrick studied forty families for a...