Skip to main content
. Author manuscript; available in PMC: 2020 Sep 1.
Published in final edited form as: Neuropsychology. 2019 Jun 13;33(6):862–871. doi: 10.1037/neu0000551

Table 2:

Standardized variance components for wave 1 processing speed measures

Full Cholesky Reduced Cholesky
a2 c2 e2 a2 c2 e2
Trails Number .19 (.02, .37) .10 (.00, .26) .72 (.63, .82) .21 (.06, .37) .08 (.00, .22) .72 (.63, .80)
Trails Letter .33 (.11, .49) .06 (.00, .26) .61 (.53, .70) .37 (.18, .47) .03 (.00, .19) .60 (.52, .69)
Stroop Word .63 (.48, .73) .00 (.00, .12) .37 (.32, .43) .63 (.57, .69) .00 .37 (.31, .43)
Stroop Color .56 (.38, .67) .01 (.00, .17) .41 (.36, .48) .58 (.51, .64) .00 .41 (.36, .49)
Reaction Time Left .31 (.13, .43) .02 (.00, .18) .67 (.59, .77) .33 (.24, .42) .00 .67 (.58, .76)
Reaction Time Right .31 (.13, .42) .01 (.00, .15) .68 (.59, .79) .32 (.22, .40) .00 .68 (.60, .78)

Reported values represent the proportion of measure variance accounted for by the genetic (a2), common environmental (c2), and unique environmental (e2) influences with 95% Confidence Intervals. The a2 term is the heritability of that measure.