A Mathematical Proof Concerning the Geometrical Aspect of Very Low Index of Difficulty in Multidirectional Tapping Task of the ISO 9241 - Part 411
2018 ◽
Vol 164
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pp. 01036
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Through mathematics, this paper works to analyse the Index of Difficulty in ISO9241-Part 411: Evaluation methods for the design of physical input devices. It was proven that all the target circles always intersect for very low Index of Difficulty; which conjectured to disturb the experiment or affect the focus of the subject. Some examples are provided, in addition, to support the proof. We hope this proof will contribute to the improvement of ISO9241, where the result might become a special attention to the designer of the experiment in human-computer interaction field; especially in checking the influence of overlap area in the human factor.
2020 ◽
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2009 ◽
pp. 221-230
2010 ◽
Vol 24
(5)
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pp. 794-803
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2021 ◽
2018 ◽
Vol 9
(4)
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pp. 108-118
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Keyword(s):
Keyword(s):