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Bryan Caplan and Arnold Kling

IQ in Economics

A Category Archive (11 entries)
September 1, 2008

The Difficult Concept of Evolution

IQ in Economics
Arnold Kling
David Friedman writes, It is hard to see how humans could have evolved intelligence if intelligence is not heritable. I hope that the notion that there is zero heritability of intelligence is a straw man. The debate ought to be... MORE

June 24, 2008

My Most Absurd Belief

Growth: Consequences
Arnold Kling
is that human nature has changed in the last few hundred years. If you could go back to 1708 and replace all of the babies at conception with babies conceived today, my prediction is that the alternative history from 1708... MORE

June 18, 2008

How Family Environment Works

IQ in Economics
Bryan Caplan
I finally got around to reading Plomin et al's classic 1997 parent-offspring adoption study. Background: Way back in 1975, Plomin and co-authors launched the Colorado Adoption Project (CAP). They put together a sample of 245 adoptees, their biological mothers, their... MORE

February 19, 2008

Personality and Ability

IQ in Economics
Arnold Kling
Nobel Laureate James J. Heckman, et al write, Most economists are unaware of the evidence that certain personality traits are more malleable than cognitive ability over the life cycle and are more sensitive to investment by parents and to other... MORE

January 22, 2008

Race and Institutions

IQ in Economics
Arnold Kling
Gary Becker writes, Yet it may be possible to overcome to a considerable degree this intergenerational transmission of low status. The most promising approaches in my opinion involve self-help programs that encourage better choices in black communities, the legalization of... MORE

December 9, 2007

Race and IQ Pushback

IQ in Economics
Arnold Kling
Tyler Cowen finds some in Slate and in The New York Times. In the latter, Richard E. Nisbett writes, Most important, we know that interventions at every age from infancy to college can reduce racial gaps in both I.Q. and... MORE

November 27, 2007

Comments on the Possible Swindle

IQ in Economics
Arnold Kling
Several interesting comments on this post. The puzzle is this: let X be the correlation between parental IQ and children's IQ. Let Y be the correlation between the child's IQ and the child's future earnings. Let Z be the correlation... MORE

November 26, 2007

Is This a Swindle?

IQ in Economics
Arnold Kling
Brad DeLong writes, If inherited genetically-based IQ were the source of the extra edge that the children of the rich get in our society, than we would expect a parent with 4 times average lifetime full-time earnings--say $200,000 a year--to... MORE

November 20, 2007

Mentioning IQ and race

Economics of Education
Arnold Kling
My latest essay tries to sort out the issues of race, IQ, and education. Earlier, I said that my preferred approach is individualism. To understand this approach, try this thought experiment: imagine if everyone suddenly were afflicted with group-identity amnesia.... MORE

November 14, 2007

More on IQ

IQ in Economics
Arnold Kling
Stephen J. Ceci writes, Each of us gains every year approximately .3 of an IQ point (6 IQ points every twenty years), and this has been found for nearly 30 nations. It was a secret before Flynn and others made... MORE

November 11, 2007

The Topic du jour

IQ in Economics
Arnold Kling
Lots of stuff showing up on IQ and genetics these days. The New York Times has a story. “Let’s say [hypothetically] the genetic data says we’ll have to spend two times as much for every black child to close the... MORE

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