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Fitts’ law in human standing: the effect of scaling
Neuroscience Letters, 1999Fitts' law states that the movement time (MT) of an aiming movement is a linear function of the index of difficulty (ID), where ID = log2(2A/W, A is the movement amplitude, and W is the target width. This law implies that MT should remain unchanged as long as A/W remains constant (i.e. the absence of a scaling effect).
Danion, F., Duarte, M., Grosjean, M.
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CHI '97 extended abstracts on Human factors in computing systems looking to the future - CHI '97, 1997
As a developing discipline, research results in the field of human computer interaction (HCI) tends to be "soft". Many workers in the field have argued that the advancement of HCI lies in "hardening" the field with quantitative and robust models. In reality, few theoretical, quantitative tools are available in user interface research and development. A
Johnny Accot, Shumin Zhai
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As a developing discipline, research results in the field of human computer interaction (HCI) tends to be "soft". Many workers in the field have argued that the advancement of HCI lies in "hardening" the field with quantitative and robust models. In reality, few theoretical, quantitative tools are available in user interface research and development. A
Johnny Accot, Shumin Zhai
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Fitts and VR: Evaluating Display and Input Devices with Fitts' Law
Proceedings of the Human Factors and Ergonomics Society Annual Meeting, 1997This paper describes an experiment using Fitts' Law to evaluate performance in target acquisition tasks comparing a typical virtual reality (VR) display and input device with a typical computer workstation display and input device. The objective was to determine the effects of using VR hardware on target acquisition performance and validate Fitts' Law ...
Mike McGee +3 more
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Extending Fitts' law to two-dimensional tasks
Proceedings of the SIGCHI conference on Human factors in computing systems - CHI '92, 1992Fitts' law, a one-dimensional model of human movement, is commonly applied to two-dimensional target acquisition tasks on interactive computing systems. For rectangular targets, such as words, it is demonstrated that the model can break down and yield unrealistically low (even negative!) ratings for a task's index of difficulty (ID).
I. Scott MacKenzie, William Buxton
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Fitts' law in two-dimensional task space
Experimental Brain Research, 1994A traditional continuous Fitts' task may be described as a one-dimensional oscillation between two targets. The combination of two such oscillations along intersecting axes gives rise to a two-dimensional aiming task, allowing the study of the speed-accuracy trade-off in two-dimensional task space. In two experiments subjects were asked to draw as many
Mottet, Denis +3 more
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An error model for pointing based on Fitts' law
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, 2008For decades, Fitts' law (1954) has been used to model pointing time in user interfaces. As with any rapid motor act, faster pointing movements result in increased errors. But although prior work has examined accuracy as the "spread of hits," no work has formulated a predictive model for error rates (0-100%) based on Fitts' law parameters.
Jacob O. Wobbrock +3 more
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Fitts' Law with transmission delay
Ergonomics, 1992It is shown that a modified form of Fitts’ Law applies when there is a transmission delay between control movements and feedback of system response to the operator. The model predicts, and experiments verify, that a multiplicative relationship holds between movement time, Index of Difficulty (ID), and transmission delay. Movement time at constant ID is
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Refining Fitts' law models for bivariate pointing
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, 2003We investigate bivariate pointing in light of the recent progress in the modeling of univariate pointing. Unlike previous studies, we focus on the effect of target shape (width and height ratio) on pointing performance, particularly when such a ratio is between 1 and 2.
Johnny Accot, Shumin Zhai
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Feedback Control of Hand-Movement and Fitts' Law
The Quarterly Journal of Experimental Psychology Section A, 1983Fitt's empirical result is stated and its information theoretic interpretation briefly discussed. An alternate derivation from a model assuming continuous velocity control of hand position is shown to fit the motion time data equally well. Detailed studies of hand motion trajectories in Fitts' reciprocal tapping task have confirmed the exponential ...
E R, Crossman, P J, Goodeve
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Behavioral and Brain Sciences, 1997
Movement time and accuracy, as defined by Plamondon & Alimi, do not conform to empirical definitions. When definitions are used that conform better to empirical ones, the original predictions of the kinematic theory are no longer valid – as is demonstrated by simulations.
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Movement time and accuracy, as defined by Plamondon & Alimi, do not conform to empirical definitions. When definitions are used that conform better to empirical ones, the original predictions of the kinematic theory are no longer valid – as is demonstrated by simulations.
openaire +1 more source