> In 2009, psychologist Jackie Andrade asked 40 people to monitor a 2-½ minute dull and rambling voice mail message. Half of the group doodled while they did this (they shaded in a shape), and the other half did not. They were not aware that their memories would be tested after the call. Surprisingly, when both groups were asked to recall details from the call, those that doodled were better at paying attention to the message and recalling the details. They recalled 29% more information! https://www.health.harvard.edu/blog/the-thinking-benefits-of...

https://en.wikipedia.org/wiki/Doodle#Effects_on_memory references the same study.

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