Introversion/extroversion, time stress, and caffeine: Effect on verbal performance

W. Revelle, P. Amaral, S. Turriff

Research output: Contribution to journalArticlepeer-review

73 Scopus citations


Time pressure and caffeine differentially affected the performance of introverts on verbal ability tests similar to the Graduate Record Examination. With time pressure and 200 milligrams of caffeine, the performance of introverts fell by 0.63 standard deviation, but extroverts by 0.44 standard deviation.
Original languageEnglish
Pages (from-to)149-150
StatePublished - 1976

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