Evidence grows of lockdown harm to the young. But we act as if nothing happened

In the 1990s, scientists at the University of Wisconsin did some interesting experiments on baby monkeys. One group was separated from their mothers at birth and raised for five months in a “nursery” of other baby monkeys. (We could perhaps call this the “evacuee” group.) The other set got to stay with their mothers, but each mother-baby pair was isolated. This “lockdown” group saw no other monkeys for five months.