ABA Fundamentals

Using words instead of jumbled characters as stimuli in keyboard training facilitates fluent performance.

DeFulio et al. (2011) · Journal of applied behavior analysis 2011
★ The Verdict

Use real words, not random letters, in typing software to reach fluent speed twice as fast with adult learners.

✓ Read this if BCBAs teaching keyboard or computer skills to teens or adults in day programs or vocational labs.
✗ Skip if Clinicians working on early phonics with autistic preschoolers or non-readers.

01Research in Context

01

What this study did

DeFulio et al. (2011) taught two groups of adults to touch-type on a keyboard. One group practiced with real words like 'house.' The other group practiced with jumbled letters like 'ohuse.'

The researchers timed how long it took each adult to reach fluent typing speed.

02

What they found

Adults who practiced with real words reached fluent speed almost twice as fast. The jumbled-letter group needed many more trials to type smoothly.

Plain words gave learners a built-in pattern to follow. Random letters did not.

03

How this fits with other research

Reiss et al. (1982) saw the same word bonus in children. After kids learned to read a word, they later spelled it perfectly just from extra looks at the printed word. Real words speed up later literacy skills across ages.

Preissler (2008) looks like a contradiction. Children with autism and cognitive delays linked new words to pictures, not to real objects. The word advantage flips when learners have different cognitive profiles.

Song et al. (2021) adds a caution. They showed that extra, meaningless cues can slow learning. Anthony’s real words worked because they carried useful meaning, not random clutter.

04

Why it matters

If you run keyboard or spelling programs, swap random letter strings for real, high-interest words right away. You will cut practice time in half for neurotypical teens and adults. Keep the old jumbled-letter task only if you need to test for generalization after mastery.

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→ Action — try this Monday

Replace any scrambled-letter files in your typing program with a list of real, functional words the client uses daily.

02At a glance

Intervention
other
Design
single case other
Population
neurotypical
Finding
positive
Magnitude
large

03Original abstract

Keyboarding skill is an important target for adult education programs due to the ubiquity of computers in modern work environments. A previous study showed that novice typists learned key locations quickly but that fluency took a relatively long time to develop. In the present study, novice typists achieved fluent performance in nearly half the time when words rather than jumbled characters were used as stimuli. This suggests that using real words in the keyboarding program can enhance the efficiency of training.

Journal of applied behavior analysis, 2011 · doi:10.1901/jaba.2011.44-921