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Psychology Professor Dr. Jordan B. Peterson gave a talk in March 2017 where he said (in the first minute of the video):

If you go back and look at the records at Harvard, for example, in the early 1960s, the typical IQ for a Harvard student was abouy 105 to 110 - not much above average. [...] Anyways the average Ivy League was bright, but not outstandingly so. Now, it is like an IQ of 145 - three standard deviations above the mean. The reason for that is that they are selected by the SAT.

But this blog article references a 2003 study suggesting the Harvard average is about 122.

Is there any conclusive data on this?

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    Just to illuminate the claim, an IQ of 145 represents the top 0.13% of the population. – Oddthinking Feb 12 '18 at 1:26
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    Which is over 400,000 people in the US alone (assuming IQ is independent of location ) – Arcanist Lupus Feb 12 '18 at 15:05
  • Harvard 15 years ago does not necessarily equate to all Ivy League schools 1 year ago. Although somewhat suspicious; I wouldn't take the Harvard static as any type of evidence for that being incorrect (though I am interested in more information on this as well). – JMac Feb 12 '18 at 15:14
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    I'm battling to find any references that aren't blogs from dubious "researchers" for this claim. Either this is data from a minor source, or Peterson is just making up the claim based upon SATs and presumed associated IQ. Even then it is probably too high. Either way, Peterson isn't a reliable source of information. brainsize.wordpress.com/2014/07/12/the-iqs-of-academic-elites – Tim Scanlon Feb 14 '18 at 12:22
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    @ArcanistLupus and only about 5,700 people in the 18-year-old US population -- the Ivy league admits about two-and-a-half times that many students – user134593 Jul 8 '18 at 16:30

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