survey of more than 2,000 people living in the UK has found that those
with a higher IQ are more likely to live a longer life.
Even when factors such as economic status and employment level were
accounted for, the smarter kids ended up living longer than those with
Researchers analysed data from the Scottish Mental Surveys - in which
almost every 11-year-old in Scotland was given the same IQ test on the
same day in 1932 - and tracked the participants' lives up to when they
passed away. The numbers show that someone with an IQ of 115 at age 11
was 21 percent more likely to be alive at the age of 76 than someone
with an IQ of 100.
There are some interesting hypotheses: one is that intelligent people
are more likely to strap themselves in while driving, choose to eat a
healthy diet, avoid smoking, and exercise more often.
Alternatively, it could be that genes are contributing to the link
between IQ and longevity.
It's a complicated area of science, particularly as an IQ score
doesn't necessarily directly represent intelligence, and can be affected
by social class, education standards, and other cultural factors.