The question of whether siblings' birth order shapes their personality has puzzled families and psychologists for years. What ...

Birth order can also have an impact in unexpected areas. For example, researchers found that firstborn children have a greater difficulty absorbing sugars into the blood and have a higher daytime ...

It examined the association between personality, birth order, and number of siblings, in 700,000 adults online in one sample and more than 70,000 in another, separate sample.

Birth order doesn’t affect your personality—just your intelligence Extraversion and other personality traits can't be attributed to your status as middle child.

Also, to determine reliably that birth order effects exist, it takes a very large sample of research participants, and many of the existing birth order studies are done on relatively small samples ...

But a couple of recent studies of large samples suggest that birth order does not matter when it comes to personality, and barely matters when it comes to intelligence. Recommended Reading.

The end of 2015 saw the publication of two studies in which the methodological shortcomings of previous birth-order research (unrepresentative sample sets, incorrect inferences) were largely obviated.

There’s no shortage of stereotypes when it comes to birth order, especially in the age of social media. Firstborns have […] ...

But the psychological theory of birth order didn’t develop until the early 20th century, ... After analyzing three nationally representative samples from the U.S., Great Britain, ...

What your birth order might say about who you date, according to science. READ MORE: Scientists reveal four key signs of an impending breakup By ELLYN LAPOINTE. Published: 15:50 EDT, 30 August ...

“Eldest daughter syndrome” assumes that birth order shapes who we are and how we interact. Does it? By Catherine Pearson Catherine Pearson is a younger daughter who still leans on her older ...