In the study, 33 undergraduate students were asked to proofread a one-page business letter half of them using Microsoft Word with its squiggly red and green lines underlining potential errors.

• 研究者们让33名大学生校对一份长1页的商业信函，其中半数学生使用微软文字处理软件，该软件会在可能有误的文字下面划出红色或绿色的波浪线；