Fitts’s Law in UX Design Fitts’s Law was introduced by a psychologist Paul Fitts in 1954. Son application correcte devient encore plus importante pour ceux qui ont une motricité limitée comme les enfants, les personnes âgées et les handicapés. However, in the online world, we often see a disregard for this law within a lot of web applications. Basée sur une équation mathématique, la loi de Fitts est utilisée afin de mettre en évidence le temps nécessaire pour atteindre un objet cible. Definition: “ The observation… that the number of objects an average person can hold in working memory is about seven ” [Wikipedia Link] [Usability.gov link] This is probably the most contentious UX Law. How to Remember Fitts’ Law: “How easily can I Fitt my finger on this button? La loi de Fitts peut se formuler très simplement : « Le temps dépend de la distance et de la taille de la cible ». 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. Sign up for The UX Collective Newsletter. Fitts’ law is widely applied in user experience (UX) and user interface (UI) design. Moving To New Hosting Provider. Le D est mis pour distance, soit la mesure du point de départ au point d’arrivée, c’est-à-dire l’objet cible. UX Fail << First < Prev: Roll it: Next > You’re Hired, You’re Fired. Typography is set in IBM Plex Sans and Plex Mono, an open-source typeface by IBM. Fitts’ Law says that “ the time to acquire a target is a function of the distance to and size of the target.” Fitts’ law offers ideas for helping your visitors with the last step above. Yevheniia Nikitina, UXC. By UX Collective. Pourquoi lire le livre UX Design et Ergonomie des Interfaces ? Comment utiliser le Design Thinking pour augmenter les conversions ? Touch targets should be placed in areas of an interface that allows them to be easily acquired. Published in 1954, Fitts’s Law is an effective method of modeling the relationship of a very specific, yet common situation in interface design. Ces deux éléments sont des valeurs issues de l’observation directe qui permet la construction d’une droite. 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. 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. Touch targets should have ample spacing between each other. 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 %. This law is named after Paul Fitts himself for his study of pointing in 1954. Fitt’s Law — UX Knowledge Base Sketch #7 What Fitts’s Law states 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. Cette loi doit être appliquée tout en conservant des considérations esthétiques, pour éviter de trop rapprocher les … Comments RSS. Fitts’ Law is certainly not the only, or even most important design consideration, but it’s almost always a good starting point. This is app is pretty useful for UX designers but jesus christ make it a little prettier! Quelle est la différence entre UX Design et ergonomie ? It describes the relationship between the difficulty of selecting a target and how big the target is and how far away it is. UX marketing : lorsque l’UX pousse l’innovation dans le domaine du marketing et de la publicité ! Laws of UX – Fitts’ Law. Fitts’ law is widely applied in user experience (UX) and user interface (UI) design. The time to acquire a target is a function of the distance to and size of the target. Faut-il choisir entre le prototypage papier et le prototypage digital ? Breaking Fitts's Law. Fitts’ law is widely applied in user experience (UX) and user interface (UI) design. ” Miller’s Law. 02. High-resolution posters are available for purchase via The Online Store of Jon Yablonski. Publiée par Paul Fitts en 1954, elle ne s'applique pas nécessairement aux interfaces tactiles actuelles (2015). UX/UI mobile : le grand retour de la Tab bar, Développement d’interfaces Web : les Frameworks JS à connaître. Fitts’ law is centered around a mathematical equation that is used to illustrate the time it takes to reach a target object. « UX is the new brand » : l’UX est la nouvelle image de marque ! 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. 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. 01. Tools used to create this site include paper, pencil and Sketch App for design, Gulp for development workflow automation, Sass for CSS preprocessing, and Nunjucks for templating. Fitts’s law is a predictive model for the speed of human movement, commonly used in human-computer interaction. Qu’est-ce que la Loi de Miller ou nombre magique de Miller ? In layman’s terms: **the closer and larger a target, the faster it is to click on 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. Fitts’s Law is just one out of 12 common UX laws! 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. Share the pain. En savoir plus sur notre utilisation des cookies. You could find more laws at lawsofux.com. It was created by Jon Yablonski. The law was intended to model the act of pointing at a target on the computer screen. Définition Loi de Pareto, principe de Pareto ou règle des 80/20. In web terms this translates to issues around button size and the size and relative positions of other clickable elements on a site. It should really be a UX suggestion. Orientation and how the device is held or stationed becomes critically important in our designs. There are certain challenges we face on mobile that we don’t have with the desktop. 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 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. An expansion of the ideas found on this site is now available in book form, titled Laws of UX: Using Psychology to Design Better Products & Services. By decreasing the distance from pointer to actionable target and by increasing the size of the actionable target you make it easier for your audience to click on links and take action. This site uses Akismet to reduce spam. 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. Learn More. InVision, outil maquettage en ligne, de la maquette à l’intégration. The Fitts’ law was created in 1954 by Paul Fitts. Learn how your comment data is processed. Fast movements and small targets result in greater error rates. Employing Fitts’ Law allows you to begin your design process with the end in mind. 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. Dans le monde UX, la base d'utilisateurs doit être prise en compte en permanence et la Loi de Fitts n'est pas différente. 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. Discussion ¬ Leave a Reply Cancel reply. Fitts’ Law: a usability hack for UX Designers Via Prototyping: From UX to Front End — Medium by Tania Vieira Fitts’s Law, often called Fitts’ Law, is actually a predictive model regarding human movement. Après une étude profonde de la loi de Fitts, une importante leçon en est issue et concerne particulièrement le domaine de l’informatique. This is most notably on mobile devices. By his law, fast movements and small targets result in greater error rates, due to the speed-accuracy trade-off. 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. 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. Users often perceive aesthetically pleasing design as design that’s more usable. 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. Laws of UX are a collection of design heuristics created by Jon Yablonski to help designers leverage psychology to create more human-centered experiences. UX designer, un spécialiste de l’expérience utilisateur (UX) qui conçoit et améliore les interfaces ! 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. 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. Thursday, June 14th, 2018. Quelques pistes pour améliorer l’UX de votre site WordPress. Laws of UX Menu. Comprendre la loi de Fitts en quelques minutes grâce à cette vidéo : Notre site utilise des cookies. The law was created to cater to both the hand and mouse actions. C… Fitts’ Law can be affected in various manners and in order to design for optimum UX it’s important to know how. 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. 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. Although multiple variants of Fitts’ law exist, all encompass this idea. He was studying human movement. 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. 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. This user experience tutorial explains Fitts's Law—that it's faster to hit larger and closer targets—and how it impacts web design. Laws of UX is a collection of the maxims and principles that designers can consider when building user interfaces. Good Morning UX #1 : Initiation à la conception UX, En savoir plus sur notre utilisation des cookies. His original study was about pointing with a stylus but his work is applicable to pointing with a mouse, touchscreens, and range of devices. Drawing from Fitts’ Law, UX designers can begin to predict human behavior and movement. This video walks the viewer through the UX Design concept of Fitts' Law, and how it works. 29. In 1954, psychologist Paul Fitts, examining the human motor system, showed that the time required to move to a target depends on the distance to it, yet relates inversely to its size. This law is applied to UX and UI design and has influenced the design of interactive buttons. Touch targets should have ample spacing between each other. It was created by Jon Yablonski . UX/UI Designer. The law was intended to model the act of pointing at a target on the computer screen. Doherty Threshold. 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. We can apply Fitt’s Law to UX design in a variety of ways: When designing for mobile, consider your tap targets. Les cibles doivent être encore plus larges pour aider à la réussite de l'atteinte de la cible par l'utilisateur. With less screen real estate reduce the number of clickable elements and increase their size. 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. 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. on March 30, 2020. Mais pour le commun des mortels, la compréhension de cette réflexion est loin d’être facile. 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. Design émotionnel et marketing émotionnel : comment tirer parti des émotions ? Laws of UX is a collection of the maxims and principles that designers can consider when building user interfaces. Small objects that are far from your starting position or related objects that are far away from each other take the longest time to select. L’expérience utilisateur (UX) dans le luxe, porteur d’innovation ! Celle-ci est même devenue un élément de base concernant l’interaction homme-machine (IHM). 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 %. 2 nov. 2019 - Fitts's Law was introduced by a psychologist Paul Fitts in 1954. With mobile growing as fast as it is, these considerations should be a standard weapon in the UX repert… The equation was originally developed based on participants selecting wooden blocks using one of their hands. Touch targets should be large enough for users to both discern what it is and to accurately select them. Sachez que la loi de Fitts est un logarithme binaire. 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. 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. ©Jon Yablonski 2020 | All Rights Reserved, Laws of UX: Using Psychology to Design Better Products & Services. The law was created to cater to both the hand and mouse actions. Visualizing Fitts’s Law It was created by Paul Fitts in 1954! 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. 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. 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. Fitts’ law is widely applied in user experience (UX) and user interface (UI) design. Fitts’s law is basically an equation that models human behaviour. It states that the time it takes someone to select an object depends on how far they are from the object and the size of the object. Aesthetic Usability Effect. Understanding this law helps us design better buttons, forms, lists, and other interactive elements. Follow. This model was originally developed based on the movement in the physical world. Fitts’ Law is the basis for predicting user behavior on a website. The Fitts’ law was created in 1954 by Paul Fitts. Chapter: 2020. That situation involves a human-powered appendage at rest (whether it’s physical like your finger or virtual like a mouse cursor) and a target area that’s located somewhere else. Likewise, the distance between a user’s task/attention area and the task-related button should be kept as short as possible. This model is believed to predict accurately the amount of time taken by any human to move and to select a target. Plus l’utilisateur atteint rapidement ses objectifs, plus son expérience sera bonne. Don’t frustrate your visitors by making it hard for them to do what you and they want to do. Which ones do you know or struggle with the most? Quant au W, il évoque la largeur de l’objet cible. 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. Email; Facebook; Twitter; Reddit; Tumblr; WhatsApp; Pinterest Comment . Written by. Ideal Fitts law application and Prime pixel thegreatone_80. Il est donc nécessaire de creuser davantage pour que cela n’ait pas l’air d’un casse-tête chinois.