One of the oldest scientific debates is “nature versus nurture” — do inherited traits or environmental factors shape who we are, and what we do?
So far it’s a draw.
For instance, a massive meta-study, reported in Nature Genetics, quantified the heritability of human traits by analyzing more than 50 years of data on almost 18 thousand traits measured in over 14.5 million pairs of twins. They determined that heritability accounted for 49 percent of all traits and environmental influences for 51 percent. Read more.