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

family goes to the beach every weekend,
but it takes her ages to dip a toe
into the surf. A classic high-reactive, I
remark.
“No!” Kagan exclaims. “Every behavior
has more than one cause. Don’t
ever forget that! For every child who’s
slow to warm up, yes, there will be
statistically more high-reactives, but
you can be slow to warm up because of
how you spent the first three and a half
years of your life! When writers and
journalists talk, they want to see a oneto-one
relationship—one behavior, one
cause. But it’s really important that you
see, for behaviors like slow-to-warmup,
shyness, impulsivity, there are
many routes to that.”
He reels off examples of environmental
factors that could produce an
introverted personality independently
of, or in concert with, a reactive
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