Fact · Typing and writing speed
-0.183correlation coefficient (r)
Across all participants, word prediction use had a small negative correlation with typing speed (r = -0.183).
Checked against its source on October 16, 2026
In the source's own words
“word prediction has a small negative correlation with performance (r = −0.183)”
How do People Type on Mobile Devices? Observations from a Study with 37,000 Volunteers, Kseniia Palin et al., Proceedings of the 21st International Conference on Human-Computer Interaction with Mobile Devices and Services (MobileHCI 2019), 2019, Results, correlation analysis.
Open the original- What it measures
- A Pearson correlation between how often people chose word suggestions and their words per minute.
- What it does not show
- A small correlation, and not an experiment. It does not show that choosing suggestions slows people down.