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A comment on Researchers find IQ scores dropping since the 1970s. Parent comment

Re:Researchers find IQ scores dropping since the 1970s by v_lisivka on Wednesday June 13, 2018 @10:16AM (#17303246)
Immigrants may have lower IQ score because of cultural barrier, e.g. Spanish is foreign language for them, so they will fail association tests.
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Re:Researchers find IQ scores dropping since the 1970s by ravar on Wednesday June 13, 2018 @10:37AM (#17303464)
This language barrier is partially what motivated the development of the Raven progressive matrices test. The test was used by the UK military to judge recruits without creating a bias based off of the recruits language.
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