The researchers emphasize that these differences are a result of the unique environment for twins—such as sharing parental ...

Twins often do not pick up new skills as fast as their single-born siblings in their early years, according to a study by the ...

Sibling rivalry is the topic of discussion on Monday. Why do siblings fight, how do we handle it as parents and guardians, and how can we turn a perceived negative into a positive? Child Development ...

Brother and sister relationships have tremendous influence over children’s adjustment and development — about as much as parenting does.

When parents catch behavioral issues in their younger children such as aggression, defiance, rule-breaking, or difficulty controlling impulses, the first instinct may be to adjust their parenting ...

Anybody who has worn a hand-me-down, shared a bathroom or survived a long car trip with a brother or a sister knows that siblings can affect your life in nearly every way possible. But researchers are ...