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Intellectual development of children from interracial matings - Springer

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<strong>Intellectual</strong> Development <strong>of</strong> Children <strong>from</strong> Interracial Matings 87Table III. Bayley Mental Raw Scores <strong>of</strong> 8-Menth-Otd Interracial InfantsCategorized by Race <strong>of</strong> Mother, Sex <strong>of</strong> Child, and Marital StatusRace <strong>of</strong> Sex <strong>of</strong> Marital Mentalmother child status score SD NWhite Male Unmarried 78.70 2.66 20White Male Married 80.09 3.85 23White Female Unmarried 79.39 2.69 31White Female Married 79.96 4.13 27Negro Male Unmarried 79.33 2.89 3Negro Male Married 81.38 3.29 8Negro Female Unmarried 80.13 4..02 8Negro Female Married 83.44 2.07 9All white 79.56 3..39 101All Negro 81.46 3.35 28All subjects 79.98 3.46 129Table IV. Bayley Motor Raw Scores <strong>of</strong> 8-Month-Old Interracial InfantsCategorized by Race <strong>of</strong> Mother, Sex <strong>of</strong> Child, and Marital StatusRace <strong>of</strong> Sex <strong>of</strong> Marital Motormother child status score SD NBWhite Male Unmarried 32.70 3.70 20White Male Married 33.78 4,47 23White Female Unmarried 32.87 4.63 31White Female Married 33.63 4.55 27Negro Male Unmarried 31.67 4.51 3Negro Male Married 31.88 3.87 8Negro Female Unmarried 32.75 3.49 8Negro Female Married 35.44 3.09 9All white 33.25 4.36 101All Negro 33.25 3.73 28All subjects 33.25 4.23 129Table V presents the IQ data <strong>from</strong> the test administered at 4 years to the129 <strong>children</strong>. In a regression analysis allowing for main effects, <strong>children</strong> <strong>of</strong> whitemothers were estimated to have an IQ significantly higher by 9.71 -+ 3.38 IQpoints. Children <strong>of</strong> married mothers had an advantage <strong>of</strong> 7.04 _+ 2.80 IQ points.Girls did better than boys by 7.52 -+ 2.82 IQ points. Deviations <strong>from</strong> regressionwere not significant (p = 0.17), so that the option <strong>of</strong> denying the existence <strong>of</strong>interactions is available. If one, nevertheless, proceeds to fit a model includingthe race-sex interaction, the constants are marital status 7.39 -+ 2.80 IQ points;race -19.51 -+ 5.34 IQ points; sex-by-race 16.25 -+ 6.87 IQ points.Either mathematical formulation can be taken to confirm what seems to berather clear in Table V, namely that the major constant is between <strong>interracial</strong>

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