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It's upsetting that we've known about this for decades from an insane random experiment that would never pass review today. Consider the 1966 study by Rosenthal

by fny 9y ago

It's upsetting that we've known about this for decades from an insane random experiment that would never pass review today. Consider the 1966 study by Rosenthal and Jacobson "Teachers’ Expectancies: Determinants Of Pupils’ IQ Gains"[0] > Within each of 18 classrooms, an average of 20% of the children were reported to classroom teachers as showing unusual potential for intellectual gains. Eight months later these “unusual” children (who had actually been selected at random) showed significantly greater gains in IQ than did the remaining children in the control group. These effects of teachers’ expectancies operated primarily among the younger children. [0]: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.495.5453&rep=rep1&type=pdf http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.495... [1]: https://en.wikipedia.org/wiki/Pygmalion_effect https://en.wikipedia.org/wiki/Pygmalion_effect

danieltillett 9y ago
You can push g around quite a bit at an early age, but by adulthood everyone regresses back to their original potential. This is just another way of saying there is a shared environmental component to g at an early age, but none in adulthood [0]. 0. There is a shared environmental component for deprived shared environments, but it has to be very extreme to not washout by adulthood.
- fjsolwmv 9y ago
  Ok, but g is an abstract psychological theory, not practical achievement and success in life.
  - danieltillett 9y ago
    Yes g is abstract, but it is more a summary of all the different factors that go into intelligence. It explains the otherwise very puzzling fact that if you measure one aspect of intelligence (say speed at which someone can do simple arithmetic) you can predict well how well they will do on something totally different (say identifying grammatical errors in a text).

by fny 9y ago

danieltillett 9y ago

You can push g around quite a bit at an early age, but by adulthood everyone regresses back to their original potential. This is just another way of saying there is a shared environmental component to g at an early age, but none in adulthood [0]. 0. There is a shared environmental component for deprived shared environments, but it has to be very extreme to not washout by adulthood.

fjsolwmv 9y ago
Ok, but g is an abstract psychological theory, not practical achievement and success in life.
- danieltillett 9y ago
  Yes g is abstract, but it is more a summary of all the different factors that go into intelligence. It explains the otherwise very puzzling fact that if you measure one aspect of intelligence (say speed at which someone can do simple arithmetic) you can predict well how well they will do on something totally different (say identifying grammatical errors in a text).