Birth order has long been linked to differences in cognition, with firstborn children often outperforming their later-born ...

Preschoolers with lots of brothers and sisters seem to develop language skills a bit slower than other kids -- possibly because they get less attention from mom and dad. But a new study suggests that ...

She texted me on my birthday last year. Just the standard message—”Happy birthday! Hope you’re doing well!—with a balloon emoji that felt like it came from a stranger. I stared at it for a while. This ...

Forbes contributors publish independent expert analyses and insights. I write about relationships, personality, and everyday psychology. Sibling relationships influence our development as growing ...

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 ...

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 ...