Table 4.
Variables | a2 | c2 | e2 |
---|---|---|---|
(a) | |||
Reading | |||
Australian sample | .84 (.61, .94) | .09 (.00, .31) | .08 (.05, .11) |
U.S. sample | .68 (.54, .84) | .25 (.09, .39) | .07 (.05, .09) |
Scandinavian sample | .33 (.11, .60) | .52 (.26, .71) | .15 (.10, .23) |
Spelling | |||
Australian twins | .74 (.44, .95) | .17 (.00, .45) | .10 (.04, .17) |
U.S. twins | .44 (.27, .63) | .41 (.23, .56) | .15 (.10, .21) |
Scandinavian twins | .46 (.17, .83) | .42 (.06, .68) | .12 (.06, .21) |
(b) | |||
Reading | |||
Australian sample | .80 (.52, .87) | .02 (.00, .28) | .18 (.13, .26) |
U.S. sample | .83 (.65, .92) | .07 (.00, .24) | .11 (.08, .14) |
Scandinavian sample | .79 (.46, .89) | .07 (.00, .38) | .14 (.09, .22) |
Spelling | |||
Australian twins | .79 (.44, .95) | .00 (.00, .19) | .20 (.15, .28) |
U.S. twins | .62 (.42, .78) | .13 (.00, .32) | .24 (.20, .31) |
Scandinavian twins | .69 (.44, .82) | .09 (.00, .31) | .22 (.15, .33) |
Note. Estimates with 95% confidence intervals including .00 are not significantly greater than 0.