Next. « UX is the new brand » : l’UX est la nouvelle image de marque ! Yablonski describes Fitts’s law and Hick’s law, which were both familiar to me—although it is always helpful to be reminded of them. Quelle est la différence entre UX Design et ergonomie ? Comprendre la loi de Fitts en quelques minutes grâce à cette vidéo : Notre site utilise des cookies. UX Design, Navigation, Interfaces The key statement of Fitts’s Law is that the time required to move a pointing device to a target is a function of the distance to the target and its size. Basée sur une équation mathématique, la loi de Fitts est utilisée afin de mettre en évidence le temps nécessaire pour atteindre un objet cible. UX/UI mobile : le grand retour de la Tab bar, Développement d’interfaces Web : les Frameworks JS à connaître. C’est de cette approche qu’est née la loi de Fitts qui, pour les designers modernes, a un sens dans la conception des interfaces utilisateur. C… La loi de Fitts est utilisée pour modéliser l'acte de « pointer », à la fois dans le vrai monde, par exemple avec une main ou un doigt, et sur les ordinateurs, par exemple avec une souris. Thanks, I really appreciate your encouragement! La loi de Fitts peut se formuler très simplement : « Le temps dépend de la distance et de la taille de la cible ». Les adeptes de la loi de Fitts considèrent que plus un objet est gros, plus il est proche de nous et plus il est facile à déplacer. The equation was originally developed based on participants … Design émotionnel et marketing émotionnel : comment tirer parti des émotions ? When designers think about how easily mobile user interface (UI) elements can be reached, they're inadvertently thinking about Fitts' Law. The Fitts’ law was created in 1954 by Paul Fitts. Fitts’ Law applies to rapid pointing movements and not continuous movement. Doherty Threshold. Likewise, the distance between a user’s task/attention area and the task-related button should be kept as short as possible. Il en ressort qu’il est possible de mesurer et de prédire de façon mathématique le fait de pointer vers un objet ou d’avoir une cible en ligne de mire. His original study was about pointing with a stylus but his work is applicable to pointing with a mouse, touchscreens, and range of devices. Cette loi doit être appliquée tout en conservant des considérations esthétiques, pour éviter de trop rapprocher les actions importantes que l’utilisateur doit réaliser. If you subscribe, you can also download the Sketching for UX designers WORKBOOK for free! Pourquoi lire le livre UX Design et Ergonomie des Interfaces ? The law was created to cater to both the hand and mouse actions. Cela est résumé dans l’équation suivante : Sachez que le T indique le temps requis pour compléter le mouvement a et b. Justement les données a et b sont des coefficients déterminés de façon empirique comme des coefficients de régression. It was created by Paul Fitts in 1954! To put Fitt’s law into very simple terms, clickable areas such as buttons should be bigger and the distance between related content should be minimal. Typically it’s bootstrapped companies that want to increase conversion rates, but don’t have the capital to hire a UX designer. Users often perceive aesthetically pleasing design as design that’s more usable. Fitts law greatly influenced the commencement of large buttons (especially on finger-operated mobile devices): Touch targets should be large enough for users to both discern what it is and to accurately select them. Fitts’s Law. Fitts’ Law is another psycho-social observation from the 1950s which posits that the time taken to focus in on a target is a function of the distance from the target and its width. UX marketing : lorsque l’UX pousse l’innovation dans le domaine du marketing et de la publicité ! Download Free PDF. pay attention to the rule of infinite edges, and keep in mind that touch screens have different characteristics. Ces deux éléments sont des valeurs issues de l’observation directe qui permet la construction d’une droite. Mais pour le commun des mortels, la compréhension de cette réflexion est loin d’être facile. He was studying human movement. Faut-il choisir entre le prototypage papier et le prototypage digital ? Quelques pistes pour améliorer l’UX de votre site WordPress. It was created by Jon Yablonski . Fitts’ law is centered around a mathematical equation that is used to illustrate the time it takes to reach a target object. Laws of UX Menu. The law has a big importance in human-computer interaction and defines the correlation between a cursor movement or a touch gesture and an interface element. If you are interested in sketching, check out my Sketching for UX designers course. Fitts’ law is widely applied in user experience (UX) and user interface (UI) design. If you like my sketches, you can buy me a coffee to support my work! However, there are certain limitations and other factors that you should take into account when designing a user interface, e.g. Les cibles doivent être encore plus larges pour aider à la réussite de l'atteinte de la cible par l'utilisateur. Sachez que la loi de Fitts est un logarithme binaire. Plus l’utilisateur atteint rapidement ses objectifs, plus son expérience sera bonne. Cela veut dire que les résultats issus de l’utilisation d’un objet prennent le sens d’une courbe et non celui d’une ligne droite. According to Fitts’s Law — which was originally describing movement in the physical world —, the time to acquire a target is a function of the distance to and the size of the target. Fitts’s Law in UX Design. We can apply Fitt’s Law to UX design in a variety of ways: When designing for mobile, consider your tap targets. Fitts’ Law can be affected in various manners and in order to design for optimum UX it’s important to know how. 01. C’est de cette approche qu’est née la loi de Fitts qui, pour les designers modernes, a un sens dans la conception des interfaces utilisateur. Fitts’s Law, often called Fitts’ Law, is actually a predictive model regarding human movement. Il est donc nécessaire de creuser davantage pour que cela n’ait pas l’air d’un casse-tête chinois. Quand on se met dans la cadre de l’IHM, un objet cible est n’importe quel élément interactif, comme un lien hypertexte, un bouton d’envoi ou un champ de saisie dans un formulaire sur internet. The law was intended to model the act of pointing at a target on the computer screen. April 5, 2011 by paulhontz. The law was intended to model the act of pointing at a target on the computer screen. Employing Fitts’ Law allows you to begin your design process with the end in mind. Après une étude profonde de la loi de Fitts, une importante leçon en est issue et concerne particulièrement le domaine de l’informatique. Laws of UX is a collection of the maxims and principles that designers can consider when building user interfaces. Fitts’s Law was established as a model for understanding human movement in the physical world before the invention of the graphic user interface, but it can also be applied to movement through a digital interface. . InVision, outil maquettage en ligne, de la maquette à l’intégration. This scientific law predicts that the time required to rapidly move to a target area is a function of the ratio between the distance to the target and the width of the target. Le D est mis pour distance, soit la mesure du point de départ au point d’arrivée, c’est-à-dire l’objet cible. Orientation and how the device is held or stationed becomes critically important in our designs. Il en ressort qu’il est possible de mesurer et de prédire de façon mathématique le fait de pointer vers un objet ou d’avoir une cible en ligne de mire. He also covers Miller’s Law—even though subsequent research has suggested the magical number of items that people can hold in their working memory is actually four, plus or minus one. Fitts’ Law is certainly not the only, or even most important design consideration, but it’s almost always a good starting point. Fitts's law is a predictive model of human movement primarily used in human–computer interaction and ergonomics. Aesthetic Usability Effect. Fitts' 1954 study used only styluses but now this guiding principle can be seen all over different digital applications. For example, this law influenced the convention of making interactive buttons large (especially on finger-operated mobile devices)—smaller buttons are more difficult (and time-consuming) to click. Fitts’s Law was introduced by a psychologist Paul Fitts in 1954. This video walks the viewer through the UX Design concept of Fitts' Law, and how it works. In 1954, Psychologist Paul Fitts, while examining the human motor system, discovered that the longer the distance to a target, and the smaller the target’s size, the longer it takes to acquire that target. For example, this law influenced the convention of making interactive buttons large (especially on finger-operated mobile devices) — smaller buttons are more difficult (and time-consuming) to click. Qu’est-ce que la Loi de Miller ou nombre magique de Miller ? If you apply this to UI design, it implies that selecting a UI element can be faster, if the size of the target element is increased, or the distance is decreased. Dans le monde UX, la base d'utilisateurs doit être prise en compte en permanence et la Loi de Fitts n'est pas différente. Fitts’ Law is the basis for predicting user behavior on a website. Quand on prend en compte ce paramètre dans la conception web, il faut comprendre qu’un très petit objet finit par devenir plus facile à cliquer quand on décide d’augmenter sa taille, par exemple de 20 %. However, in the online world, we often see a disregard for this law within a lot of web applications. This is most notably on mobile devices. A target object, in the context of UIs, can be any interactive element, such as a submit button, a hyperlink, and an input field in a web form. Publiée par Paul Fitts en 1954, elle ne s'applique pas nécessairement aux interfaces tactiles actuelles (2015). I’ve had several technical founders ask for advice on building landing pages. For example, this law influenced the convention of making interactive buttons large (especially on finger-operated mobile devices)—smaller buttons are more difficult (and time-consuming) to click. La loi de Fitts est une formule qui définit le temps qu’il faut à une personne pour amener son pointeur d’un endroit de l’écran à un autre. Fitts's Law describes how long it takes a user to hit a target in a graphical user interface (GUI) or other design, as a function of size and distance. Laws of UX are a collection of design heuristics created by Jon Yablonski to help designers leverage psychology to create more human-centered experiences. Good Morning UX #1 : Initiation à la conception UX, En savoir plus sur notre utilisation des cookies. L’expérience utilisateur (UX) dans le luxe, porteur d’innovation ! 02. Shaheena Attarwala December 14, 2016 December 14, 2016 design thinking, Interface Design, usability testing, User Behaviour, User Experience, UX Concepts, UX Knowledge, UX Methodology. In web terms this translates to issues around button size and the size and relative positions of other clickable elements on a site. Quant au W, il évoque la largeur de l’objet cible. The law was created to cater to both the hand and mouse actions. This model was originally developed based on the movement in the physical world. This law is named after Paul Fitts himself for his study of pointing in 1954. Touch targets should have ample spacing between each other. A clear view of what your users will do once they access your page gives you the advantage of staying one step ahead as you lead them to actions. Learn More. Understanding this law helps us design better buttons, forms, lists, and other interactive elements. You may or may not have heard about Fitts Law, but it’s a fundamentally important one that’s most frequently ignored. Comment utiliser le Design Thinking pour augmenter les conversions ? Drawing from Fitts’ Law, UX designers can begin to predict human behavior and movement. This model is believed to predict accurately the amount of time taken by any human to move and to select a target. This user experience tutorial explains Fitts's Law—that it's faster to hit larger and closer targets—and how it impacts web design. Post navigation. If you apply this to UI design, it implies that selecting a UI element can be faster, if the size of the target element is increased, or the distance is decreased. Son application correcte devient encore plus importante pour ceux qui ont une motricité limitée comme les enfants, les personnes âgées et les handicapés. log2(d/w) a (fixed cost portion) b (control rate) d w Distance: x1 y1 x2 y2 UX designer, un spécialiste de l’expérience utilisateur (UX) qui conçoit et améliore les interfaces ! You can find explanations for each law on the website lawsofux.com, as well as an in-depth case study regarding his thought process on his website, jonyablonski.com. Thursday, June 14th, 2018. This law is applied to UX and UI design and has influenced the design of interactive buttons. Leveraging Fitts' Law in Modern UX Practices. Définition Loi de Pareto, principe de Pareto ou règle des 80/20. The Fitts’ law was created in 1954 by Paul Fitts. If you have any comments or questions please reach out to me here or on Twitter: @krisztaszerovay, The Information Capacity of the Human Motor System in Controlling the Amplitude of Movement, Paul Fitts’s original article: The Information Capacity of the Human Motor System in Controlling the Amplitude of Movement, 10 essential UI (user-interface) design tips, Fitts’s Law: The Importance of Size and Distance in UI Design, Affinity Mapping & Thematic Analysis in UX Research — UX Knowledge Piece Sketch #20, How to Test Your UX Copy — UX Knowledge Piece Sketch #19, Information Scent: How Users Look for Information — UX Knowledge Piece Sketch #18, Information Foraging Theory: Part 1 — UX Knowledge Piece Sketch #17, Storyboarding Pro Tips: Part 2 — UX Knowledge Piece Sketch #16, Storyboarding Pro Tips: Part 1 — UX Knowledge Piece Sketch #15, Sketching exercises for designers: Dashboard, The Hook Model — UX Knowledge Piece Sketch #14. Pourtant, lorsqu’on découvre certaines interfaces utilisateurs, on se rend compte de la mise en place de boutons d’appel à l’action surdimensionnés, ce qui n’est pas une nécessité. Dans un article publié en 1954, le psychologue Paul Fitts parle de sa théorie relative à la mécanique de l’homme permettant de prédire le mouvement. It describes the relationship between the difficulty of selecting a target and how big the target is and how far away it is. Likewise, the distance between a user’s task/attention area and the task-related button should be kept as short as possible. In layman’s terms: the closer and larger a target, the faster it is to click on that target. Fitts’s law is basically an equation that models human behaviour. There are certain challenges we face on mobile that we don’t have with the desktop. With mobile growing as fast as it is, these considerations should be a standard weapon in the UX repert… It might sound obvious, but if you have a large button on screen, ensure it’s the primary call to action otherwise you run the risk of users clicking it inadvertently. Celle-ci est même devenue un élément de base concernant l’interaction homme-machine (IHM). You can subscribe to my Sketching for UX newsletter to get these UX Knowledge Base Sketches directly to your inbox weekly, and to participate in a 100-day long UX-visual library building challenge. Fitts's law is used to model the act of pointing, either by physically touching an object with a hand or finger, or virtually, by … Dans un article publié en 1954, le psychologue Paul Fitts parle de sa théorie relative à la mécanique de l’homme permettant de prédire le mouvement. Please feel free to join the Sketching for UX Designers group on Facebook, post your UX sketches, share your favorite links, ask questions etc. Pointing movements (such as moving a mouse over a link and clicking it) typically begin with a quick movement toward the target (ballistic movement) followed by fine-tuning movements (homing movements) over the target. En effet, on apprend de celle-ci que même s’il est plus facile de cliquer sur un gros bouton, ce dernier n’est pas forcément le plus optimal, c’est-à-dire celui qui offre la meilleure utilisabilité. En savoir plus sur notre utilisation des cookies. Par compte, si l’objet est grand, il ne partagera pas le même élan en termes d’utilisabilité avec l’agrandissement de sa taille toujours de 20 %. Ce qu’il faut comprendre dans le fonctionnement de cette loi est que plus on peut atteindre rapidement un objet cible, plus cet objet est considéré comme pratique et facile à utiliser. Laws of UX – Fitts’ Law. Fitts’ Law in UX. According to Fitts’s Law — which was originally describing movement in the physical world —, the time to acquire a target is a function of the distance to and the size of the target. Fitts’ Law says that “ the time to acquire a target is a function of the distance to and size of the target.” Fitts’ law is widely applied in user experience (UX) and user interface (UI) design. Previous. Teaching developers UX: Use Fitts’ law to build a polished landing page. With less screen real estate reduce the number of clickable elements and increase their size. Origin. Fitts’ law is widely applied in user experience (UX) and user interface (UI) design. Plus l ’ UX pousse l ’ expérience utilisateur ( UX ) and user interface ( UI design. Of pointing at a target, the distance between a user interface, e.g in human–computer interaction ergonomics! Base d'utilisateurs doit être prise en compte en permanence et la Loi de Fitts fitts' law ux un logarithme binaire online,... 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