2.0 Limit the Compression Range
When designing a multimedia message with
time-compression, stay within the range of 150
(normal speed) to a maximum of approximately
275 wpm, which is 1.8 times (40% compression)
the speed of normal narration. We have seen from
our research and the research dating back to the
1950s that learning outcomes begin to degrade
when this ceiling is reached in learning materials
(Fairbanks, Guttman, and Miron, 1957; Foulke,
1968; Reid, 1968). Ritzhaupt and Barron (2008)
found that learners were most satisfied with
1.4 times (20% compression) the normal audio
speed or approximately 210 wpm. This study
included a normal speed of approximately 150
wpm, meaning learners were more satisfied with
an accelerated treatment as oppose to the normal
speed. Pastore (In review) surveyed learners and
found that learners preferred a compression
percentage of about 10%, which translates to
about 165 wpm. Put simply, our results suggest
learners actually prefer accelerated audio speeds
in multimedia learning materials.
2.0 Limit the Compression RangeWhen designing a multimedia message withtime-compression, stay within the range of 150(normal speed) to a maximum of approximately275 wpm, which is 1.8 times (40% compression)the speed of normal narration. We have seen fromour research and the research dating back to the1950s that learning outcomes begin to degradewhen this ceiling is reached in learning materials(Fairbanks, Guttman, and Miron, 1957; Foulke,1968; Reid, 1968). Ritzhaupt and Barron (2008)found that learners were most satisfied with1.4 times (20% compression) the normal audiospeed or approximately 210 wpm. This studyincluded a normal speed of approximately 150wpm, meaning learners were more satisfied withan accelerated treatment as oppose to the normalspeed. Pastore (In review) surveyed learners andfound that learners preferred a compressionpercentage of about 10%, which translates toabout 165 wpm. Put simply, our results suggestlearners actually prefer accelerated audio speedsin multimedia learning materials.
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