Word: cortisol
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Dates: during 1983-1983
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...respond differently to stress than do calmer people classified as Type B's. When Dr. Redford Williams at Duke University asked a group of male undergraduates to perform a mental arithmetic task (serial subtraction of 13 from 7,683), the Type A students produced 40 times as much cortisol and four times as much epinephrine as their Type B classmates. The flow of blood to their muscles was three times as great, though there was no difference in their level of performance. "The Type A man is responding as though he were in an emergency or threatening situation," says...