Some psychologists and teachers say purple ink is less intimidating than red on a corrected school paper. "When it comes to correcting papers and grading tests, purple is emerging as the new red."
"Red's legacy as the color used in correcting papers and marking mistakes goes back to the 1700s, the era of the quill pen. In those days, red ink was used by clerks and accountants to correct ledgers. From there, it found its way into teachers' hands." Read the article "Harshness of red marks has students seeing purple" By Naomi Aoki, Boston Globe, 23.Aug.2004
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