"The Heart Grows Smarter"

A NYT OP-Ed piece, so of course if you try to get to it by clicking this link: http://www.nytimes.com/2012/11/06/opinion/brooks-the-heart-grows-smarter.html, you'll be asked to sign in. The way around this is to copy the actual link text:

http://www.nytimes.com/2012/11/06/opinion/brooks-the-heart-grows-smarter.html

and paste it into the Google search box at Google.com. Then the page link will come up as the first hit and click on that link. Now, you can see the page. Excerpt:

'If you go back and read a bunch of biographies of people born 100 to 150 years ago, you notice a few things that were more common then than now.
...
It wasn’t only parents who were emotionally diffident; it was the people who studied them. In 1938, a group of researchers began an intensive study of 268 students at Harvard University. The plan was to track them through their entire lives, measuring, testing and interviewing them every few years to see how lives develop.

In the 1930s and 1940s, the researchers didn’t pay much attention to the men’s relationships. Instead, following the intellectual fashions of the day, they paid a lot of attention to the men’s physiognomy. Did they have a “masculine” body type? Did they show signs of vigorous genetic endowments?