How People Make Their Own Environment: A Theory Of Genotype-Environmental Effects
I. Describe the three kinds of genotype-environmental effects Scarr and McCartney assume and give an example of each.
In a Passive genotype-environmental effect, the genetically related parents provide a rearing environment that is correlated with the genotype (genetic makeup of an organism) of the child. A child's environment is correlated with their genes, which correlate with their parents' genes because he or she is making decisions likely from their own preferences. Passive genotype-environmental effects cannot interpret the direction of effects in parents-child interaction, but also cannot interpret the cause of those effects in biologically related families. An example of a passive genotype-environment can be found negatively in sports. Parents who are skilled track runners faced with a child who is not learning to do sports let alone run track, may provide a more enriched environment for the less able child than for another who acquires track skills quickly. Infant......
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