. Author manuscript; available in PMC: 2018 May 1.

Published in final edited form as: Int J Psychophysiol. 2017 Mar 12;115:112–124. doi: 10.1016/j.ijpsycho.2017.03.002

Table 5.

Genetic and environmental contributions to the rate of developmental changes in the amplitudes of No-Go and Go ERP components (difference scores, age 16 – age 12).

ERP phenotype	r_MZ	r_DZ	Additive Genetic (Heritability)	Non-shared Environmental
N2, FCZ	0.30^* (0.09 – 0.49)	0.10 (−0.11 – 0.30)	0.29^* (0.10 – 0.46)	0.71^* (0.54 – 0.90)
P3N, FCZ	0.22^* (0.001 – 0.42)	0.09 (−0.12 – 0.29)	0.21^* (0.01 – 0.39)	0.79^* (0.61 – 0.99)
P3G, PZ	0.40^* (0.19 – 0.56)	−0.05 (−0.26 – 0.16)	0.28^* (0.09 – 0.45)	0.72^* (0.55 – 0.91)

r_MZ and r_DZ are intrapair correlations for MZ and DZ twin pairs, respectively (95% confidence intervals are shown in brackets);

p<.05;

a² is the proportion of total phenotypic variance explained by genetic factors (heritability) and e² is the proportion of variance due to non-shared environmental factors. Variance component estimates are based on the best-fitting model.