VINTAGE, AUGUST 2011
A journalist once asked the behavioral psychologist Donald Hebb whether a person’s genes or environment mattered most to the development of personality. Hebb replied that the question was akin to asking which feature of a rectangle—length or width—made the most important contribution to its area.
The “nature vs. nurture” conundrum was reinvigorated when genes were identified as the units of heredity, containing information that directs and influences development. When the human genome was sequenced in 2001, the hope was that all such questions would be answered. In the intervening decade, it has become apparent that there are many more questions than before.
We’ve reached a point where most people are savvy enough to know that the correct response isn’t “nature” or “nurture,” but some combination ...
