To Wamboldt, Schmitz, & Mrazek (1998). Genetic
association between atopy and behavioural symptoms in
middle childhood. Volume 39 (7), pp. 1007–1016.
Through Dr Emily Simonoff's re-analysis of our data
(see article above, pp. 667–674) we found a slight model
specification change which has now been corrected and
which actually provides stronger results. Revised Tables
4–6 are available from the authors by request.
Correct covariance matrix for the DZ opposite-sex
pairs for atopy and total problem score
1 2 3 4
1 0.710
2 0.352 2.393
3 0.213 0.044 0.825
4 0.025 1.717 0.137 2.980
Corrected last paragraph of the Results section
Additive genetic effects accounted for most of the
correlation between atopy and the three CBCL scores:
77% of the correlation between atopy and internalising
symptoms, 100% of the correlation between atopy and
externalising symptoms, and 93% of the correlation
between atopy and total problem scores. The genetic
correlation (rG) between atopy and INT was .34 and the
nonshared environmental correlation (rE) was .16; for
atopy and EXT rG was .29 and there was no rE; for total
problems and atopy rG was estimated at .37 and rE at
.06. The parameter estimates obtained from the bivariate
factor model (full model, or A & E) are as follows: for
atopy, h2 = .72 and e2 = .28; for INT, h2 = .35, c2 =
.28 and e2 = .37; for EXT, h2 = .55, c2 = .23 and
e2 = .22; and for Total Problems, h2 = .34, c2 = .45 and
e2 = .21.