. Author manuscript; available in PMC: 2015 Sep 1.

Published in final edited form as: Behav Genet. 2014 Aug 13;44(5):456–467. doi: 10.1007/s10519-014-9668-4

Table 2.

Parameters in quantitative genetic model; interpretation in each generation

Parameter	Parent generation	Offspring generation
A (Additive genetic)	Additive genetics	Additive genetics
C (Common environment)	Environment unique to one mother	Environment shared between siblings
M (Maternal environment)	Environment shared between sisters who are mothers	Environment shared between cousins
P (Paternal environment)	Spouse effect	Paternal effect
E (Non-shared environment)	Environment unique to each pregnancy	Unique individual environment