Abstract
A new power law of movement time for motor control tasks is proposed as an alternative to the classical Fitts’ law. A reanalysis of Fitts’ original data indicates that this power law may provide superior fits to those of Fitts’ law, which may be interpreted as a special case of the power law. The so-called rate of change of information derived from Fitts’ law, which is claimed to be an invalid information-theoretic measure, is an exponentially decreasing function of Fitts’ index of difficulty according to the power law rather than a fixed quantity as derived from Fitts’ law.
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Kvålseth, T.O. An alternative to Fitts’ law. Bull. Psychon. Soc. 16, 371–373 (1980). https://doi.org/10.3758/BF03329568
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DOI: https://doi.org/10.3758/BF03329568