Graphic designers and layout artists didn?t need a scientific study to know that a word that is enlarged, distorted, or repositioned on the page can change the way it is read. Researchers have, however, recently measured this effect. In children?s books, expressive typography alters the tone, rhythm, and even the duration of reading aloud.
Published on September 3, 2026, in the Swiss scientific journal Frontiers in Education , the study The Influence of Expressive vs. Conventional Typography on Parent-Child Shared Book Reading The study involved 72 parent-child pairs. The children were, on average, a little over five years old. Each parent read books that were available in two versions: one using conventional typography, and the other using what is known as expressive typography.
In particular, the experiment varied the font, font size, letter placement, and even the shape of the letters. The sessions were recorded to analyze how the adults adapted their reading.
A measurable effect on tone and rhythm
With the expressive typeface, sessions lasted an average of 5.08 minutes, compared with 4.69 minutes with the conventional version?an increase of about 8 percent.
Above all, the differences are evident in the way the text is voiced. Parents changed their tone an average of 10.62 times with the expressive typeface layout, compared to 6.59 times with conventional typography. The same was true for rhythm, with 10.17 changes compared to 6.57.
The researchers also observed greater variation in voice and gestures.
For the authors, these findings support the idea that typography can serve as a cue for the reader: in particular, the size, shape, or layout of the characters can convey emphasis, rhythm, emotion, or a character?s voice.
For professionals in editorial design, the study primarily provides a framework for a principle already widely applied in graphic design: typography does more than simply organize text or ensure its readability; it also plays a direct role in its narrative.
