The Durk Pearson & Sandy Shaw®
Life Extension NewsTM
Volume 18 No. 3 • July 2015


Sandy has a hypothesis (though it is entirely possible that others have also suggested this) to explain the widely discussed fact of a rising IQ over six countries in the past 100 years that has been getting a lot of press. See, for example, the Sat./Sun. May 30-31 2015 The Wall Street Journal, pg. C2.

You will have noticed if you’ve read about this—and this has been discussed—that the greatest increase in IQs has taken place during periods of prosperity. Right now, the IQs are still increasing but only slowly. Consistent with the trend, the present economy is not a very prosperous one.

Sandy proposes that the rising IQs are occurring as a result of ENVIRONMENTAL ENRICHMENT, which has been studied extensively in the scientific literature using both animals and humans as subjects. Environmental enrichment is robustly linked to an increase in neurogenesis. It appears to explain quite nicely how, during periods of prosperity characterized by the availability of many opportunities (like putting lots of toys and things to do in an animal’s cage), an increase in neurogenesis is likely to be taking place with IQs being a rough indicator of that.

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