First-born children most intelligent

  • Marie Claire is supported by its audience. When you purchase through links on our site, we may earn commission on some of the items you choose to buy.
  • Are you a first-born child? You have higher IQ than siblings

    If you’re a first-born child, then now’s the time to gloat, as according to new research you are officially more intelligent than your siblings.

    The oldest child in a family is more likely to have a higher IQ and the youngest to have the lowest, say Dutch scientists.

    A study in Amsterdam of 650 children tested their IQs three times until they were 18.

    Lead researcher, Dorret Boomsma, revealed: ‘The highest IQ scores were in children without any older siblings, followed by children with one older sibling.

    ‘Children with two or more older siblings obtained the lowest score.’

    The reason behind the results is still ambiguous, however it is believed the amount of attention parents give first-borns advances their intelligence.

    If you are the baby of the family, all is not lost. Another study of 2,000 families showed that the youngest in a family is the most favoured as well as ‘agreeable, sociable and creative’.

    Reading now