The new findings, from a landmark study published Friday, showed that eldest children had a slight but significant edge in I.Q. -- an average of three points over the closest sibling. And it found that the difference was not because of biological factors but the psychological interplay of parents and children.
Predictably, the study set off a swarm of Internet commentary from parents, social scientists and others, speculating about what in families could enrich one child's intellectual environment more than others'.
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As Americans head to the polls in 2024, the very future of our country is at stake. At HuffPost, we believe that a free press is critical to creating well-informed voters. That's why our journalism is free for everyone, even though other newsrooms retreat behind expensive paywalls.
Our journalists will continue to cover the twists and turns during this historic presidential election. With your help, we'll bring you hard-hitting investigations, well-researched analysis and timely takes you can't find elsewhere. Reporting in this current political climate is a responsibility we do not take lightly, and we thank you for your support.
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