Go Ahead, Write in the Margins—It’s Good for Your Brain

image via New Scientist

September 19, 2025, 2:30 PM

• •Marginalia has a long history, with notable figures like da Vinci using it.
• •Handwriting during reading enhances memory and comprehension.
• •Annotation fosters deeper understanding and personal interpretation.
• •Various annotation styles cater to different readers and purposes.

Annotating books, also known as marginalia, is a practice with a rich history, valued by figures like Leonardo da Vinci and modern authors like Ann Patchett. Research suggests that handwriting and annotation enhance memory and comprehension, fostering a deeper understanding of the text. Experts believe that annotating helps readers develop their own interpretations and maintain learner autonomy, with various styles suitable for different readers. Whether coordinated with cover aesthetics or focused on personal favorites, the act of annotation offers unique cognitive benefits.

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