ABSTRACT
This chapter discusses sociobiology and the related genetic-reductionist conception, evolutionary developmental psychology. In contrast to the dynamic nonlinear interactive models full of reciprocity between and among levels and variables, behavioral genetics presents a relatively non-dynamic linear additive model that tries to assign percentages of variance in behavior and development that can be attributed to genes. Behavioral genetics model fitting is based on the assumption that genetic and environmental influences are "additive." Clearly, many human developmentalists do not believe the causal "storyline" of behavior genetics. The core genetic principle of life leads to several other ideas about how genes influence individual behavior and the social world. Any genetically influenced tendencies in these directions will necessarily be favored by natural selection. Extending the positive view of the contributions of behavior genetics into the second decade of the twenty-first century, Plomin and colleagues presented in 2016 the "top ten" replicated findings from behavior genetics.
