body { -ms-overflow-style: scrollbar; overflow-y: scroll; overscroll-behavior-y: none; } .errorContainer { background-color: #FFF; color: #0F1419; max-width: 600px; margin: 0 auto; padding: 10%; font-family: Helvetica, sans-serif; font-size: 16px; } .errorButton { margin: 3em 0; } .errorButton a { background: #1DA1F2; border-radius: 2.5em; color: white; padding: 1em 2em; text-decoration: none; } .errorButton a:hover, .errorButton a:focus { background: rgb(26, 145, 218); } .errorFooter { color: #657786; font-size: 80%; line-height: 1.5; padding: 1em 0; } .errorFooter a, .errorFooter a:visited { color: #657786; text-decoration: none; padding-right: 1em; } .errorFooter a:hover, .errorFooter a:active { text-decoration: underline; } #placeholder, #react-root { display: none !important; } body { background-color: #FFF !important; }

JavaScript is not available.

We’ve detected that JavaScript is disabled in this browser. Please enable JavaScript or switch to a supported browser to continue using twitter.com. You can see a list of supported browsers in our Help Center.

Terms of Service Privacy Policy Cookie Policy Imprint Ads info © 2023 Twitter, Inc.

Conversation

Geoffrey Miller

Birth order has no effect on personality traits.

Quote Tweet

Scientific American

Are you a firstborn who is neurotic? Or an emotionally stable middle child? Perhaps you're the youngest but the most ambitious? Researchers examine the idea that birth order affects personality bit.ly/33tA1H7

48

56

394

Replying to

fight slatestarcodex.com/2018/01/08/fig

9:29 PM · Aug 14, 2019

Inquisitive Bird

@Scientific_Bird

Replying to

and

I haven't looked much at the birth order literature, but isn't there this one large study that found substantial effects on intelligence just like stated by Scott Alexander (early siblings more intelligent)? nber.org/reporter/2017n

6