Middle children occupy a special place in the sibling line-up, between the eldest and the youngest. Now a study reveals that they develop particular traits because of this.

New research flips the script on sibling stereotypes—here's what you need to know about middle children and birth order.

The study used the HEXACO Personality Inventory to assess 6 personality traits based on sibling birth order: honesty-humility, emotionality, extraversion, agreeableness, conscientiousness, and ...

People-pleasing, responsible, reliable, efficient, are just some traits associated with ... protect and nurture my younger sibling. I was the listening ear for elder relatives, and I wanted ...

The role birth order plays in superpower personality traits and IQs has been debated and researched for years. But do the ...