quiet-the-power-of-introverts-in-a-world-that-cant-stop-talking-susan-cain

introversion, as well as a heightened
risk of depression in humans who have
had difficult lives. When baby monkeys
with a similar allele were subjected to
stress—in one experiment they were
taken from their mothers and raised as
orphans—they processed serotonin less
efficiently (a risk factor for depression
and anxiety) than monkeys with the
long allele who endured similar privations.
But young monkeys with the
same risky genetic profile who were
raised by nurturing mothers did as well
as or better than their long-allele
brethren—even those raised in similarly
secure environments—at key social
tasks, like finding playmates, building
alliances, and handling conflicts. They
often became leaders of their troops.
They also processed serotonin more
efficiently.
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