It is very difficult to improve reading performance. Historically, one way to improve performance has been to create newer, clearer fonts. Most fonts being read on computer monitors were designed to be read from paper. This study evaluated two fonts that were specifically designed for use on computer monitors. The new fonts were Georgia and Verdana.
After designing the fonts, they conducted a study to examine people's speed of reading with the new fonts. Participants in the studies were people from Carnegie Mellon University, including faculty, staff and graduate students who ranged in age from 20 to 53.
All text was set at 10 points with 13 points leading and an average line length of 10 words. Subjects read the text on a 17 inch screen with a resolution of 640 x 480 pixels.
They compared the following:
They found no reliable performance differences in reading speed.
Next they evaluated aliased vs. anti-aliased fonts. Anti-aliased fonts use levels of color in selected pixels to eliminate the appearance of jagged edges (the "jaggies"). In these studies, all text was displayed at 16 points (a character must be at least 14 points for the anti-aliasing to show).
They compared the following fonts:
Again, they found no performance differences in reading speed.
The screen fonts that have been used successfully for the past few years seem to work as well as newly designed fonts. There seems to be no reliable differences between serif and sans-serif fonts, or between aliased and anti-aliased fonts. If reading speed is to be improved, it appears that it will not come from making changes to the fonts.
Improvement in reading speed when using computers will require more drastic alternatives.
Aaronson and Colet (1997) have proposed several ways to improve reading speed. They described some methods that have been developed in computer laboratories over the past few years to help in controlling text displays for reading research.
One method had subjects pace themselves through word sequences. Each time they pressed a key on the keyboard a new word would show in the center of the screen (overwriting the existing word). In this way, the subjects could pace themselves through word sequences. Reading speed was improved over the speed of reading from a document because virtually all eye movements (saccades) were eliminated.
A closely related, but alternative method, was to allow subjects to have each key press show a new word, but to have some or all preceding words remain on the screen. In this way a sentence or paragraph gradually appears, which allowed users to glance back at previously read material.
One of the most promising methods is called Rapid Serial Visual Presentation (RSVP). It was first used in the mid-1960s for rapidly displaying individual words, one at a time, in the center of a monitor's screen. Each new word replaced the old word. Users set the rate that the computer presented the words. This approach has demonstrated a capacity to substantially improve reading speed.
In the 1999 User Interface Update course (see below), the RSVP method is used to illustrate how quickly reading performance can be improved. In one class the average reading speed from a paper document was measured to be 342 words-per-minute, with a range from 143 to 540 words-per-minute. After determining the basic reading rate, the class members read material presented on the screen, one word at a time, at 600, then 800, then 1,000, then 1,300, and finally at 1,600 words-per-minute. After each set of reading material, the students answered multiple choice questions about the text.
The top reading speeds were as follows for measured comprehension scores of 75% or higher:
The average for the class was 1212 wpm, which is about 3.5 times faster than reading in the traditional way. There is no question that the computer can help improve reading performance; but it must be done in non-traditional ways.
A study of fonts designed for screen display, Boyarski, D., Neuwirth, C., Forlizzi, J., and Regli, S.H., CHI 98 Conference Proceedings, 87-94 (1998).
Reading paradigms: From lab to cyberspace? Aaronsn, D. and Colet, E., Behavior Research Methods, Instruments and Computers, 29 (2), 250-255 (1997).
Suggest research study along these same lines using modern technology and application such as Humanized Enso and Quicksilver, both of which utilize findings in these articles and attempt to increase task speeds and readability by creating a consistent command-line user interface that controls disperate UI conventions on their desktops.
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