While research has demonstrated that expressive writing about traumatic events can increase short-term memory capacity, the underlying psychological mechanism for this effect is not yet understood.

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Expressive writing is a technique that can enhance short-term memory. A 2008 study by Masao Yogo and Shuji Fujihara found that participants who wrote about traumatic life experiences for 20-minute intervals over several weeks showed an increase in their short-term memory capacity. This effect was specific to writing about trauma, as it was not observed in participants who wrote about their best possible future or trivial topics.

Expressive Writing as a Memory Strategy

Spielman, R. M., Jenkins, W. J., & Lovett, M. D. (2020, April 22). Psychology (2nd ed.). OpenStax. https://openstax.org/books/psychology-2e/pages/1-introduction

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