Central Control of Timing in Skilled Typing.

Abstract : The timing of keystrokes during errors in skilled transcription typing suggests central control of timing for two-letter sequences. I find that letter transpositions are performance errors, and the timing of interstroke intervals in these errors is closely correlated with the pattern found in the same words typed correctly. This and other aspects of the timing argue against both a distributed processing model with single-character units and a pure metronome model. For these two-character sequences, timing seems to be controlled by signals issued generally, rather than to a specific finger. (Author)