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

limbs (or staying calm) in response to
popping balloons. The high-reactive babies
were not misanthropes in the making;
they were simply sensitive to their
environments.
Indeed, the sensitivity of these children’s
nervous systems seems to be
linked not only to noticing scary things,
but to noticing in general. High-reactive
children pay what one psychologist
calls “alert attention” to people and
things. They literally use more eye
movements than others to compare
choices before making a decision. It’s as
if they process more deeply—sometimes
consciously, sometimes not—the
information they take in about the
world. In one early series of studies,
Kagan asked a group of first-graders to
play a visual matching game. Each
child was shown a picture of a teddy
bear sitting on a chair, alongside six
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