Answered By: Katie Hutchison
Last Updated: Sep 07, 2016     Views: 110

In APA style, it is appropriate to use numerals (numbers) to express time in a paper.  The following examples from the Publication Manual of the American Psychological Association may all be correct:

  • 1 hr 34 min.
  • at 12:30 a.m.
  • 2-year-olds
  • scored 4 on a 7-point scale

"Exception: Use words for approximations of numbers of days, months, and years (e.g., about three months ago)."

For more information, see APA manual sections 4.27 to 4.33 (approximately p. 108-112)

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