Monthly Archives: October 2013

Gender and BW gap changes over time in the GSS Wordsum (SPSS syntax)

GSS data for SPSS format available here (select cumulative data set). Unfortunately, it wasn’t possible to exclude “hispanic” in the white or even in the black sample in the analysis of gap over time. For one reason : HISPANIC variable has not … Continue reading

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Race-SES Interaction : Some Evidence of Increasing Black-White IQ Differences With SES Levels From Various Survey Data

I present here some more evidence about the race*SES interaction concerning IQ from various survey data. The techniques are employed. Comparison of means among different SES strata, ANCOVA and multiple regression.

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Racial IQ gap by SES in the CNLSY79 (SPSS syntax)

Read the related page for syntax in other survey data.

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Racial IQ gap by SES in the HSLS 2009 (SPSS syntax)

Read the related page for syntax in other survey data.

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Racial IQ gap by SES in the ECLS-K (SPSS syntax)

Read the related page for syntax in other survey data.

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Racial IQ gap by SES in the Add Health (SPSS syntax)

Read the related page for syntax in other survey data.

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Racial IQ gap by SES in the NLSF (SPSS syntax)

Read the related page for syntax in other survey data.

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Racial IQ gap by SES in the NLSY97 (SPSS syntax)

Read the related page for syntax in other survey data.

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Racial IQ gap by SES in the NLSY79 (SPSS syntax)

Read the related page for syntax in other survey data.

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Black-White gap over time and by SES (SPSS syntax) in the GSS and other gaps by SES from other survey data

The GSS data for SPSS format is available at this address. Just click on “GSS 1972-2012 Cross-Sectional Cumulative Data (Release 2, June 2013)”. The Add Health here. Download everything, the weight variables too. The NLSF is available here. This needs a free account. … Continue reading

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Flynn contra Rushton on principal component analysis : A failed replication

While Rushton (1999) demonstrates, using PCA, that g and black-white differences were related, with Flynn Effect (FE) gains over time showing no relationship with the aforementioned variables, Flynn (2000) has challenged Rushton in arguing that Wechsler’s subtest loadings on the … Continue reading

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