Behavior genes and behavior environments
Loehlin:
There are at least 18 ways in which personality-oriented behavior geneticists are concerned with environments. They include three forms of gene-environment correlation, eight varieties of shared environment, three of unshared environment, three forms of gene-environment interaction, and the environment of evolution.
Loehlin details the ways that environmental variance might be partitioned into shared and unique pre- and post-natal environments and how parents and children can be environments for each other. He also lists the "Environment of human evolution" which isn't something that will fall out of a variance component model but should be considered from comparisons across species: our personality structure is nothing new or unique.
Loehlin, JC (2009) Environment and the behavior genetics of personality: let me counts the ways. Pers Indiv Dif doi:10.1016/j.paid.2009.10.035 photo cc-by G u i d o