Fact · Typing and writing speed
Most typists in the study performed at least a small share of their keystrokes with rollover.
Checked against its source on October 16, 2026
In the source's own words
“most typists performing at least a small percentage of keystrokes by means of rollover”
Observations on Typing from 136 Million Keystrokes, Vivek Dhakal et al., CHI 2018, ACM Conference on Human Factors in Computing Systems, 2018, Results.
Open the original (DOI 10.1145/3173574.3174220)- What it measures
- The rollover ratio is the share of keystrokes typed with rollover. The study reports 40 to 70 percent for fast typists, so this fact covers the wider group.
- What it does not show
- A statement about the study's online sample, which is self-selected.