Research behind Immersive Reader, one of Microsoft's Learning Tools for inclusive classrooms.

Font spacing

10% faster and 50% fewer reading errors when reading text with optimized layout

  • Marco Zorzi, et al., Extra-large letter spacing improves reading in dyslexia

Findings point to a subtype of dyslexia involving elevated crowding and demonstrate that individuals benefit from interventions personalized to their specific impairments.

Line length

27% increase in reading speed when using short line lengths

Breaking words into syllables

10% increase in reading comprehension for adults with syllabification

  • Yu-Chi Tai, et al., Within-Word Text Segmentation on Lexical Processing and Reading

Building the syllabic bridge from available phonological syllables and frequent letter clusters may therefore be the first step in learning to read.

Page color

The children who chose a colored overlay read more slowly without the overlay than with it. These children reported more symptoms of visual discomfort and showed signs of tiring when they read without the overlay

Text-to-speech (Read aloud) and word or line highlighting

It was concluded that students with learning disabilities in all grades, except the 7th grade… benefitted from the read aloud accommodation more than their typical peers, presenting a differential boost.

Simultaneous highlighting and voicing text – “Dual highlighting is a related software feature, sometimes called masking, in which the context (sentence or paragraph) is highlighted in one color while the spoken word is highlighted in a second color, making it easier for readers to stay in sync with the spoken text….They found that students with LD who were given text passages with bimodal input performed as well on the comprehension questions as the average reader control group with visual input alone.

"Elkind examined the effectiveness of using speech synthesis during reading tasks on reading performance for post-secondary students with dyslexia. Their results showed participants not only demonstrated improved reading rates and comprehension, but also increased their ability to sustain attention while reading.”

The use of screen readers or other text-to-speech software has led to increased reading comprehension performance for students with the weakest reading skills.

For students with reading disabilities, text-to-speech technologies may assist students with reading comprehension – a meta-analysis.

Sitka font

During the typeface's development, we tested how well people could read each of the letters in the typeface, and used the test results to inform design decisions

Case Studies