Matti Keloharju's research discussed in The New York Times
27.02.2012
The New York Times article "What High-I.Q. Investors Do Differently" by Robert Shiller that appeared on February 26, 2012 discusses the results of "IQ and Stock Market Participation" by Mark Grinblatt (UCLA), Matti Keloharju, and Juhani Linnainmaa (Chicago Booth).
A January 19, 2012 Bloomberg Business Week news story "Smart Money Owns More Equities Says IQ Study of Who Buys Stocks" by Ksenia Galouchko and Katia Porzecanski also discusses the same research article.
The "IQ and Stock Market Participation" article was published in The Journal of Finance December 2011 issue. Download the article as a pdf file.