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

We might call this the “rubber band
theory” of personality. We are like rubber
bands at rest. We are elastic and
can stretch ourselves, but only so much.
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To understand why this might be so for
high-reactives, it helps to look at what
happens in the brain when we greet a
stranger at a cocktail party. Remember
that the amygdala, and the limbic system
of which it’s a key part, is an ancient
part of the brain—so old that
primitive mammals have their own versions
of this system. But as mammals
became more complex, an area of the
brain called the neocortex developed
around the limbic system. The neocortex,
and particularly the frontal cortex
in humans, performs an astonishing