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Святая Инквизиция против расиста-генетика | ||
| Children's background | Age 7 IQ | Age 17 IQ | Age 17 | Age 17 class rank | Age 17 school aptitude | |
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| Adopting parents tested when children were 7 and 17 | 120 | 115 | - | - | - | |
| Nonadopted, with two White biological parents | 117 | 109 | 3.0 | 64 | 69 | |
| Adopted, with two White biological parents | 112 | 106 | 2.8 | 54 | 59 | |
| Adopted, with one White and one Black biological parent | 109 | 99 | 2.2 | 40 | 53 | |
| Adopted, with two Black biological parents | 97 | 89 | 2.1 | 36 | 42 |
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