Showing posts with label intelligence. Show all posts
Showing posts with label intelligence. Show all posts
Wednesday, March 2, 2011
Wednesday, December 15, 2010
Smart boy wanted: longevity and intelligence
Economists are interested in the returns to cognitive ability. One fairly basic return is longevity: smarter people live longer. But why? An obvious explanation is that they make better choices, avoiding the Darwin Awards for example. A more specific hypothesis is that they cope better with adversity and hence live longer. Some experimental evidence is detailed here. Don't worry: it uses bees.
Sunday, December 12, 2010
The height of intelligence
The positive correlation between height and intelligence has been documented many times. It is attributed generally to deficits in early life nutrition. According to some this explains much of the height/earnings premium. So is there any evidence on this correlation for Ireland? Using the Growing Up in Ireland data I graph the students mathematics score against their height (adjusting for sex, SES and birthweight) along
with a 95% confidence interval.
So yes there is a slight upward gradient but it flattens out above about 1.25 metres, possibly even dipping at the very top of the range, the raw correlation is .114. But on the whole it looks fairly flat and shorter people who want to be mathematicians should not be discouraged.
with a 95% confidence interval.So yes there is a slight upward gradient but it flattens out above about 1.25 metres, possibly even dipping at the very top of the range, the raw correlation is .114. But on the whole it looks fairly flat and shorter people who want to be mathematicians should not be discouraged.
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