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

medial orbitofrontal cortex, a key component
of the brain’s dopamine-driven
reward system, is larger in extroverts
than in introverts.
By contrast, introverts “have a smaller
response” in the reward system,
writes psychologist Nettle, “and so go
less out of their way to follow up [reward]
cues.” They will, “like anyone,
be drawn from time to time to sex, and
parties, and status, but the kick they get
will be relatively small, so they are not
going to break a leg to get there.” In
short, introverts just don’t buzz as
easily.
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In some ways, extroverts are lucky;
buzz has a delightful champagnebubble
quality. It fires us up to work