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Related Experiment Videos

Effector-dependent acquisition of novel typing sequences.

R Parasher1, S Roy, A M Gordon

  • 1Department of Biobehavioral Sciences, Teachers College, Columbia University, New York, NY 10027, USA.

Experimental Brain Research
|March 13, 2001
PubMed
Summary

Typing disruptions from transposed keys were less severe when movements involved non-homologous fingers. This study found that practice improved some typing errors but not others, indicating complex motor learning.

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Area of Science:

  • Cognitive Psychology
  • Human-Computer Interaction
  • Motor Learning

Background:

  • Previous research indicated typing disruptions were reduced when transposed keys involved mirror movements of homologous fingers.
  • A hypothesis proposed that motor acquisition is facilitated when new movements mirror previously learned ones.

Purpose of the Study:

  • To investigate the impact of different types of key transpositions on typing performance.
  • To test the hypothesis that mirrored movements facilitate motor acquisition in typing.

Main Methods:

  • Experienced typists (n=6) typed phrases with physically transposed keys for 200 trials.
  • Transpositions involved similar/different movements of homologous/non-homologous fingers between hands.

Main Results:

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  • Typing disruptions varied, with the largest delays preceding the transposed key.
  • Practice differentially affected recovery; some intervals improved, others did not.
  • Transpositions involving non-homologous digits were less disruptive than those involving homologous digits.

Conclusions:

  • The results do not support the hypothesis that mirrored movements facilitate acquisition.
  • Typing disruptions depend on specific key transpositions and digit involvement.
  • Findings suggest typing is organized at multiple levels, including individual key presses and word processing.