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.

Are middle children the most honest and cooperative? Science says yes! Find out why middle-borns have a unique edge.

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