A larger family worsens kids' cognitive development, suggests 30-year study
A larger family worsens kids' cognitive development, suggests 30-year study
![](https://derp.foo/pictrs/image/088fd3bd-ba9d-47eb-82a7-10f8991bda3a.jpeg?format=webp&thumbnail=128)
bigthink.com A larger family worsens kids' cognitive development, suggests 30-year study
How does family size and sibling position affect kids' development? A 30-year study turned up some fascinating findings.
![A larger family worsens kids' cognitive development, suggests 30-year study](https://derp.foo/pictrs/image/088fd3bd-ba9d-47eb-82a7-10f8991bda3a.jpeg?format=webp)
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