Declines in vocabulary among American adults within levels of educational attainment, 1974–2016

  title={Declines in vocabulary among American adults within levels of educational attainment, 1974–2016},
  author={Jean M. Twenge and W. Keith Campbell and Ryne A. Sherman},
Abstract We examined trends over time in vocabulary, a key component of verbal intelligence, in the nationally representative General Social Survey of U.S. adults (n = 29,912). Participants answered multiple-choice questions about the definitions of 10 specific words. When controlled for educational attainment, the vocabulary of the average U.S. adult declined between the mid-1970s and the 2010s. Vocabulary declined across all levels of educational attainment (less than high school, high school… Expand
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