Recently, I read an article in which a developmental psychologist cited a mountain of evidence showing that IQ was one of the most significant predictors of emotional resiliency in children. The same pattern has also long been seen in the military, where it has been conclusively shown that higher-IQ soldiers show fewer signs of long-term post-traumatic stress.
Why would cognitive ability predict emotional hardiness? In truth, it doesn't. But the tests that measure cognitive ability do. When you tell people they have 12 minutes to show whether...
