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. 2015 Jan-Feb;48:30–36. doi: 10.1016/j.intell.2014.10.002

Table 3.

Regression parameters for the association between SES and IQ latent growth factors in boys and girls across two subsamples of twins from TEDS.

Bi SEi βi Bs SEs βs Bq SEq βq
Boys 1 2.19 .39 .12 0.98 .12 .26 − 0.05 .01 − .21
Girls 1 2.73 .37 .15 0.81 .11 .21 − 0.03 .01 − .16
Boys 2 2.05 .39 .11 0.95 .12 .24 − 0.04 .01 − .19
Girls 2 2.70 .37 .15 0.75 .11 .20 − 0.03 .01 − .15

Note. B refers to the unstandardized regression estimate; SE is the Standard Error; and β is the standardized regression coefficient. Subscripts denote the latent growth factor that values refer to (i = intercept; s = slope; q = quadratic term). All regression coefficients are significant at p < .001.