Yves GUIARD

schoolCNRSbar_chart#5694 Global Rank

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#5694

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Recent Publications

How Relevant is Hick's Law for HCI?

Hick's law is a key quantitative law in Psychology that relates reaction time to the logarithm of the number of stimulus-response alternatives in a task. Its application to HCI is controversial: Some believe that the law does not apply to HCI tasks, others regard it as the cornerstone of interface design. The law, how…

CHI '183rd AuthorUser Research Methods (Interviews, Surveys, Observation) +1

The Perils of Confounding Factors: How Fitts’ Law Experiments can Lead to False Conclusions

The design of Fitts' historical reciprocal tapping experiment gravely confounds index of difficulty ID with target distance D: Summary statistics for the candidate Fitts model and a competing model may appear identical, and the validity of Fitts' model for some tasks can be legitimately questioned. We show that the c…

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