Lexical, sublexical, and peripheral effects in skilled typewriting

Abstract It is generally accepted that expert typewriting performance is strongly affected by the sequence of letters being typed, but there is controversy about the importance of units larger than single letters, such as digraphs or words. We studied expert typists transcribing prose texts and random words. Analyses of interstroke intervals demonstrated the presence of digraph frequency, word frequency, and syllable boundary effects, in addition to the expected effects of movement difficulty. Word frequency and syllable boundary effects function primarily at the perceptual level, whereas digraph frequency and physical difficulty effects function primarily at the motor level.

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