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

his subjects from infancy into adolescence,
but Schwartz wanted to see what
happened to them after that. Would the
footprint of temperament be detectable,
all those years later, in the adult brains
of Kagan’s high- and low-reactive infants?
Or would it have been erased by
some combination of environment and
conscious effort?
Interestingly, Kagan cautioned
Schwartz against doing the study. In
the competitive field of science research,
you don’t want to waste time
conducting studies that may not yield
significant findings. And Kagan worried
that there were no results to be
found—that the link between temperament
and destiny would be severed by
the time an infant reached adulthood.
“He was trying to take care of me,”
Schwartz tells me. “It was an interesting
paradox. Because here Jerry was
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