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

For one of those studies, launched in
1989 and still ongoing, Professor Kagan
and his team gathered five hundred
four-month-old infants in his Laboratory
for Child Development at Harvard,
predicting they’d be able to tell, on the
strength of a forty-five-minute evaluation,
which babies were more likely to
turn into introverts or extroverts. If
you’ve seen a four-month-old baby
lately, this may seem an audacious
claim. But Kagan had been studying
temperament for a long time, and he
had a theory.
Kagan and his team exposed the fourmonth-olds
to a carefully chosen set of
new experiences. The infants heard
tape-recorded voices and balloons popping,
saw colorful mobiles dance before
their eyes, and inhaled the scent of alcohol
on cotton swabs. They had wildly
varying reactions to the new stimuli.
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