Table 2.
Testing the Generalist Genes Hypothesis: Correlations Between Reading SNP-Set Scores and Other Measures of Literacy, Math, and Cognitive Abilities
| Phenotype | SNP set (complete data)a | SNP set (missing data option)b |
|---|---|---|
| NC English | ||
| Speaking and listening | r= .048 (p= .060), N= 1,538 | r= .051** (p= .001), N= 3,924 |
| Reading | r= .079** (p= .002), N= 1,536 | r= .078** (p< .001), N= 3,919 |
| Writing | r= .088** (p= .001), N= 1,529 | r= .072** (p< .001), N= 3,903 |
| English composite | r= .083** (p= .001), N= 1,543 | r= .077** (p< .001) N= 3,935 |
| NC math | ||
| Using and applying | r= .109** (p< .001), N= 1,528 | r= .072** (p< .001), N= 3,912 |
| Numbers and algebra | r= .078** (p= .002), N= 1,526 | r= .074** (p< .001), N= 3,909 |
| Shapes, space, and measures | r= .086** (p= .001), N= 1,517 | r= .071** (p< .001), N= 3,888 |
| Math composite | r= .098** (p< .001), N= 1,533 | r= .077** (p< .001), N= 3,923 |
| General cognitive ability | ||
| Vocabulary | r= .045 (p= .090), N= 1,442 | r= .050** (p= .005), N= 3,158 |
| Similarities | r= .050 (p= .058), N= 1,439 | r= .042* (p= .017), N= 3,158 |
| Conceptual Grouping | r= .035 (p= .179), N= 1,448 | r= .026 (p= .151), N= 3,173 |
| Picture Completion | r= .033 (p= .209), N= 1,445 | r= .017 (p= .341), N= 3,172 |
| Verbal Composite | r= .056* (p= .034), N= 1,434 | r= .053** (p= .003), N= 3,145 |
| Nonverbal Composite | r= .046 (p= .084), N= 1,445 | r= .028 (p= .111), N= 3,169 |
| Composite g | r= .066* (p= .012), N= 1,432 | r= .052** (p= .003), N= 3,140 |
Note.NC = National Curriculum; SNPs = single nucleotide polymorphisms.
a
These SNP-set analyses include only those individuals with data for all 10 SNPs.
b
These SNP-set analyses include individuals with missing genotypes replaced with the population mean.
*
indicates significance at .05 alpha level.
**
indicates significance at .01 alpha level.