27 JUL 2018 by ideonexus

 Heritable IQ is Boosted by Environment, Just Like Height

hough it’s not easy to pinpoint the causes of the rise in IQ scores, it’s no paradox that a heritable trait can be boosted by changes in the environment. That’s what happened with height, a trait that also is highly heritable and has increased over the decades, and for some of the same reasons: better nutrition and less disease. Brains are greedy organs, consuming about a fifth of the body’s energy, and they are made of fats and proteins that are demanding for the body to produce. Fig...
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24 DEC 2016 by ideonexus

 Different Measure of Intelligence Peak at Different Ages

One potential concern with cross-sectional data is that it may be subject to cohort effects. Our findings in Experiment 2 are consistent with the possibility that people born in 1945 have unusually large vocabularies, people born in 1980 have unusually good working memory, and people born in 1990 have unusually fast processing speed. Such concerns can be mitigated by converging results from cross-sectional datasets collected at different times (Schaie, 2005). Here, we compared results derived...
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01 MAR 2016 by ideonexus

 "Idiocracy" is a Problematic Anti-Poor Film

Unlike other films that satirize the media and the soul-crushing consequences of sensationalized entertainment (my personal favorite being 1951's Ace in the Hole), Idiocracy lays the blame at the feet of an undeserved target (the poor) while implicitly advocating a terrible solution (eugenics). The movie’s underlying premise is a fundamentally dangerous and backwards way to understand the world. The origin story for Idiocracy’s future world of half-wits is that uneducated people in the e...
Folksonomies: intelligence criticism
Folksonomies: intelligence criticism
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30 MAY 2015 by ideonexus

 Scientific Reasoning Explains Increases in IQ

The bombshell is that the Flynn Effect is almost certainly environmental. Natural selection has a speed limit measured in generations, but the Flynn Effect is measurable on the scale of decades and years. Flynn was also able to rule out increases in nutrition, overall health, and outbreeding (marrying outside one’s local community) as explanations for his eponymous effect.241 Whatever propels the Flynn Effect, then, is likely to be in people’s cognitive environments, not in their genes, d...
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