An exploration of how sibling position influences personality development. Birth order doesn't just determine when family ...

Controlling for age, gender and religious activity ― three factors that could influence their findings ― Lee and Ashton found that middle-born participants scored highest on Honesty-Humility and ...

While birth order is known to influence people’s personality traits and behavior, whether you’re the cautious first-born or the risk-taking youngest child, that’s not the only way it affects ...

The Latest Birth Order Study Brock University’s Michael ... known as “d,” which measures effect size independently of sample size. A value of .2 is small, .5 is medium, and ...