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Whenever you read text, your brain processes the visual stimuli (刺激物) to create meaning and understand the content. Chances are, you don’t pay much attention to the way the information is presented- particularly the font (字体) choice. That’s because your main target is reading comprehension, not aesthetics.

Although typography(排印) is missed by most of us, it’s essential in making texts legible, readable and appealing for audiences. Beyond the visual aspect, research shows that fonts play a significant role in the mental processes of understanding that happen while we read. A font’s impact on the way you learn and memorize information might be hard to notice consciously, but your brain is certainly tuned in. Perhaps surprisingly, hard-to-read fonts such as Bodoni, Comic Sans, or Monotype Corsiva are better for memorizing information than fonts like Arial or Times New Roman, according to some studies.

“Difficulty can function as an alarm signal, giving the reader a sense that the task is challenging and will require mental effort,” says Daniel Oppenheimer, a professor of psychology at Carnegie Mellon University and one of a 2010 study authors, “Additionally, slowing down the reading speed to deal with the disfluency may increase the probability of spotting errors in a text.”

Font characteristics such as style, size and color play a role in information retention memory or recall as well, says Stephen Banham, a typography lecturer at RMIT University in Melbourne, Australia. Experiments have proved a U-shape relationship between font size and memory: Large-font items may predict higher recall regardless of style, but very small font sizes can also introduce a desirable difficulty.

A document’s specific method of formatting information also makes an impact. Using font styles like bold or italics to indicate significance can also improve memory. That’s because people are better able to remember information they consider important, says Oppenheimer. Researchers found that bolded text has a higher recall than text in italic or regular styles, regardless of the font size. However, if an entire document is bolded, the emphasis is lost, and readers can no longer spot vital passages.