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For questions about intelligence quotient (IQ) scores, methods of assessment of IQ, and correlates of IQ.

3 votes
Accepted

IQ Test stability longitudinal study

There are some subtleties to this question which you may or may not realize. There are (at least) two similarly sounding questions, but they are actually quite different questions: Does an individua …
Eff's user avatar
  • 700
2 votes

Bounds on skew and kurtosis of IQ

Despite mean IQ-scale scores of 100, modal scores were about 105... …
Eff's user avatar
  • 700
4 votes
Accepted

Is the logic of "Herrnstein's syllogism" sound, and are its premises true?

The study on the origins of inventors mentioned above similarly does a brother-only comparison, and they conclude "This suggests that these coefficients capture an effect of IQ on the probability of inventing …
Eff's user avatar
  • 700
4 votes
Accepted

Paper discussing economic rationale of IQ-based hiring practices

I believe I know which paper you're referring to. My guess is the widely cited Schmidt & Hunter (1998) paper. The paper summarizes 85 years of practical and theoretical implications of research in per …
Eff's user avatar
  • 700
10 votes

Is there any evidence that fluid intelligence is malleable?

In fact, all of this goes back to Arthur Jensen's infamous 1969 paper How Much Can We Boost IQ and Scholastic Achievement, which made intelligence research controversial if it wasn't already. …
Eff's user avatar
  • 700