The first question typically asked of parents enrolling their child in a crèche or nursery school is: boy or girl? Does it really matter? It certainly does at first glance when you watch the kids play. Girls, not uncommonly attired in pink sequin dresses, are often huddled together playing “family” or jumping around, dancing and chattering with each other. Boys, on the other hand, tend to busy themselves with building blocks or race around the yard on balance bikes. How much of that is innate, and how much acquired via societal norms? In science, this is known as the nature versus nurture deba…