Comparer des méthodes

	La loi de Fitts	Test du premier clic
Domaine	Interaction humain-machine	Interaction humain-machine
Famille	Hypothesis test	Hypothesis test
Année d'origine	1954	2000s
Auteur d'origine	Paul Fitts	Quirkstudio and UX Practitioners
Type	Empirical model of human movement time as function of distance and target size	Click-based navigation evaluation in realistic visual context
Source fondatrice	Fitts, P. M. (1954). The information capacity of the human motor system in controlling the amplitude of movement. Journal of Experimental Psychology, 47(6), 381–391.	Quirkstudio. (2014). First Click Testing: User Research for Navigation. Quirkstudio White Paper.
Alias	Fitts Law, Rapid Aimed Movement Law	First Click Test, FCT
Apparentées	4	4
Résumé	Fitts's Law is an empirical model of human rapid aimed movement, predicting that movement time increases logarithmically with the ratio of distance to target size. Formulated by Paul Fitts in 1954, this fundamental law describes how long it takes to move to and select a target (e.g., clicking a button on a screen or reaching a physical object). In human-computer interaction, Fitts's Law is widely applied to evaluate and optimize pointer-based interfaces such as mice, touchpads, and touch screens.	First-Click Testing is a rapid, quantitative method for evaluating whether users click on the correct element to start a task on a web page or screen. Users view a screenshot or live page and are asked to click where they would start a specific task. The test measures success rate (correct first click) and records which elements are commonly misclicked. Unlike tree testing (text-only navigation), first-click testing preserves visual design, isolating navigation labeling and visual information architecture in realistic context.