Character-related factors
Type width
Type widths, defined as the interior distance between the two stems of the letter »n«, range from condensed to extended. A normal type width is approximately 50% of x-height.
The smaller counters and apertures found in condensed typefaces make reading more difficult. Extended typefaces take up more space horizontally, reducing the number of letters that can be recognised in one fixation during the reading process, and so create additional difficulties for people with a restricted field of vision. Standard type widths are therefore recommended.
Summarized Recommendations
Type width
- Use standard type widths
- Avoid condensed and extended typefaces