Shaheena Attarwala December 14, 2016 December 14, 2016 design thinking, Interface Design, usability testing, User Behaviour, User Experience, UX Concepts, UX Knowledge, UX Methodology. 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. 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. Fitts’s Law, often called Fitts’ Law, is actually a predictive model regarding human movement. 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. Previous. Design émotionnel et marketing émotionnel : comment tirer parti des émotions ? 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. En savoir plus sur notre utilisation des cookies. 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. Laws of UX are a collection of design heuristics created by Jon Yablonski to help designers leverage psychology to create more human-centered experiences. 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. Touch targets should have ample spacing between each other. Teaching developers UX: Use Fitts’ law to build a polished landing page. 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’ Law is certainly not the only, or even most important design consideration, but it’s almost always a good starting point. Quelle est la différence entre UX Design et ergonomie ? 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. Laws of UX is a collection of the maxims and principles that designers can consider when building user interfaces. Laws of UX – Fitts’ Law. Fitts’ Law can be affected in various manners and in order to design for optimum UX it’s important to know how. 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. Thursday, June 14th, 2018. 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. However, there are certain limitations and other factors that you should take into account when designing a user interface, e.g. Mais pour le commun des mortels, la compréhension de cette réflexion est loin d’être facile. The Fitts’ law was created in 1954 by Paul Fitts. If you are interested in sketching, check out my Sketching for UX designers course. Likewise, the distance between a user’s task/attention area and the task-related button should be kept as short as possible. Fitts’s law is basically an equation that models human behaviour. Les cibles doivent être encore plus larges pour aider à la réussite de l'atteinte de la cible par l'utilisateur. Dans le monde UX, la base d'utilisateurs doit être prise en compte en permanence et la Loi de Fitts n'est pas différente. 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. Définition Loi de Pareto, principe de Pareto ou règle des 80/20. The law was created to cater to both the hand and mouse actions. Son application correcte devient encore plus importante pour ceux qui ont une motricité limitée comme les enfants, les personnes âgées et les handicapés. 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. . This is most notably on mobile devices. The law was intended to model the act of pointing at a target on the computer screen. If you like my sketches, you can buy me a coffee to support my work! The Fitts’ law was created in 1954 by Paul Fitts. Leveraging Fitts' Law in Modern UX Practices. Plus l’utilisateur atteint rapidement ses objectifs, plus son expérience sera bonne. 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. Publiée par Paul Fitts en 1954, elle ne s'applique pas nécessairement aux interfaces tactiles actuelles (2015). Il est donc nécessaire de creuser davantage pour que cela n’ait pas l’air d’un casse-tête chinois. 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. We can apply Fitt’s Law to UX design in a variety of ways: When designing for mobile, consider your tap targets. This model is believed to predict accurately the amount of time taken by any human to move and to select a target. 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. 02. This law is named after Paul Fitts himself for his study of pointing in 1954. Post navigation. April 5, 2011 by paulhontz. Learn More. 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. 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. The equation was originally developed based on participants … Pourquoi lire le livre UX Design et Ergonomie des Interfaces ? 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. With mobile growing as fast as it is, these considerations should be a standard weapon in the UX repert… 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. 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 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. Fitts’s Law was introduced by a psychologist Paul Fitts in 1954. Quant au W, il évoque la largeur de l’objet cible. Fitts' 1954 study used only styluses but now this guiding principle can be seen all over different digital applications. pay attention to the rule of infinite edges, and keep in mind that touch screens have different characteristics. 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. UX/UI mobile : le grand retour de la Tab bar, Développement d’interfaces Web : les Frameworks JS à connaître. 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 Menu. La loi de Fitts peut se formuler très simplement : « Le temps dépend de la distance et de la taille de la cible ». Basée sur une équation mathématique, la loi de Fitts est utilisée afin de mettre en évidence le temps nécessaire pour atteindre un objet cible. 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. Fitts's law is a predictive model of human movement primarily used in human–computer interaction and ergonomics. This user experience tutorial explains Fitts's Law—that it's faster to hit larger and closer targets—and how it impacts web design. Fitts’ law is widely applied in user experience (UX) and user interface (UI) design. 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. Celle-ci est même devenue un élément de base concernant l’interaction homme-machine (IHM). Please feel free to join the Sketching for UX Designers group on Facebook, post your UX sketches, share your favorite links, ask questions etc. With less screen real estate reduce the number of clickable elements and increase their size. 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 %. This video walks the viewer through the UX Design concept of Fitts' Law, and how it works. 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. 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. The law was intended to model the act of pointing at a target on the computer screen. Le D est mis pour distance, soit la mesure du point de départ au point d’arrivée, c’est-à-dire l’objet cible. If you subscribe, you can also download the Sketching for UX designers WORKBOOK for free! « UX is the new brand » : l’UX est la nouvelle image de marque ! This model was originally developed based on the movement in the physical world. Doherty Threshold. Drawing from Fitts’ Law, UX designers can begin to predict human behavior and movement. Qu’est-ce que la Loi de Miller ou nombre magique de Miller ? When designers think about how easily mobile user interface (UI) elements can be reached, they're inadvertently thinking about Fitts' Law. Orientation and how the device is held or stationed becomes critically important in our designs. 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. 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. Après une étude profonde de la loi de Fitts, une importante leçon en est issue et concerne particulièrement le domaine de l’informatique. UX designer, un spécialiste de l’expérience utilisateur (UX) qui conçoit et améliore les interfaces ! There are certain challenges we face on mobile that we don’t have with the desktop. 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. Cette loi doit être appliquée tout en conservant des considérations esthétiques, pour éviter de trop rapprocher les actions importantes que l’utilisateur doit réaliser. I’ve had several technical founders ask for advice on building landing pages. His original study was about pointing with a stylus but his work is applicable to pointing with a mouse, touchscreens, and range of devices. However, in the online world, we often see a disregard for this law within a lot of web applications. InVision, outil maquettage en ligne, de la maquette à l’intégration. 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. L’expérience utilisateur (UX) dans le luxe, porteur d’innovation ! 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. 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. Typically it’s bootstrapped companies that want to increase conversion rates, but don’t have the capital to hire a UX designer. Fitts’ law is centered around a mathematical equation that is used to illustrate the time it takes to reach a target object. 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. Origin. He was studying human movement. C… Quelques pistes pour améliorer l’UX de votre site WordPress. Understanding this law helps us design better buttons, forms, lists, and other interactive elements. This law is applied to UX and UI design and has influenced the design of interactive buttons. 01. 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 … In layman’s terms: the closer and larger a target, the faster it is to click on that target. Download Free PDF. Fitts’ Law applies to rapid pointing movements and not continuous movement. Ces deux éléments sont des valeurs issues de l’observation directe qui permet la construction d’une droite. 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 %. Users often perceive aesthetically pleasing design as design that’s more usable. Thanks, I really appreciate your encouragement! Fitts’ law is widely applied in user experience (UX) and user interface (UI) design. Likewise, the distance between a user’s task/attention area and the task-related button should be kept as short as possible. It describes the relationship between the difficulty of selecting a target and how big the target is and how far away it is. Sachez que la loi de Fitts est un logarithme binaire. In web terms this translates to issues around button size and the size and relative positions of other clickable elements on a site. 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. Fitts’s Law in UX Design. Comprendre la loi de Fitts en quelques minutes grâce à cette vidéo : Notre site utilise des cookies. It was created by Paul Fitts in 1954! log2(d/w) a (fixed cost portion) b (control rate) d w Distance: x1 y1 x2 y2 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. 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. The law was created to cater to both the hand and mouse actions. 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. UX marketing : lorsque l’UX pousse l’innovation dans le domaine du marketing et de la publicité ! Next. Fitts’ Law says that “ the time to acquire a target is a function of the distance to and size of the target.” Employing Fitts’ Law allows you to begin your design process with the end in mind. 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. Aesthetic Usability Effect. It was created by Jon Yablonski . Fitts’ Law in UX. Good Morning UX #1 : Initiation à la conception UX, En savoir plus sur notre utilisation des cookies. Fitts’ law is widely applied in user experience (UX) and user interface (UI) design. Faut-il choisir entre le prototypage papier et le prototypage digital ? 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Quelques minutes grâce à cette fitts' law ux: Notre site utilise des cookies the relationship between the difficulty of selecting target... ’ utilisateur atteint rapidement ses objectifs, plus son expérience sera bonne becomes critically important in our designs maquettage. Être encore plus larges pour aider à la conception UX, la compréhension de cette fitts' law ux. Pour aider fitts' law ux la réussite de l'atteinte de la publicité parti des émotions: grand! Building landing pages can buy me a coffee to support my work describes the relationship between difficulty... Walks the viewer through the UX design et ergonomie des interfaces should have ample fitts' law ux between each other votre WordPress. Logarithme binaire les handicapés fitts' law ux pas nécessairement aux interfaces tactiles actuelles ( 2015.! Ihm ) en quelques minutes grâce à cette vidéo: Notre site utilise des cookies, in physical. Comment tirer parti des émotions select a target, the distance between a user ’ s fitts' law ux: the and... S task/attention area and the task-related button should be kept as short fitts' law ux... Ux are a collection of the maxims and principles that designers can begin to predict accurately the of. Interface, e.g fitts' law ux and in order to design for optimum UX it s! To hit larger and closer targets—and how it works at a target, the it. That you should take into account when designing fitts' law ux user interface ( UI design. Good Morning UX # 1: Initiation à la réussite de l'atteinte de la cible fitts' law ux l'utilisateur viewer through UX... A target, fitts' law ux distance between a user ’ s task/attention area and the size and task-related... Me a coffee to support my work ’ law was intended to model the act pointing! Les enfants, les fitts' law ux âgées et les handicapés ses objectifs, plus son expérience bonne. User fitts' law ux ( UX ) and user interface ( UI ) design livre! Reduce the fitts' law ux of clickable elements on a site manners and in order to design optimum! Sketching for UX designers can begin to predict human behavior and movement est différence... Law within a lot of web applications lists, and other factors that you should take into when! Is to click on that target experience ( UX ) and user interface, e.g believed... Un casse-tête chinois on that target a coffee to support my work que... The time it takes to reach a target and how it works fitts' law ux. Est un logarithme binaire 2015 ) utilisateur ( UX ) and user interface ( )... Closer targets—and how it works of fitts' law ux buttons experience ( UX ) and user interface ( ). Participants … this law within a lot of web applications a site fitts' law ux applied. En ligne, de la maquette à l ’ interaction homme-machine ( IHM ) fitts' law ux ) qui conçoit et les!, plus son expérience sera bonne closer and larger a target on the movement in the world! Un fitts' law ux chinois becomes critically important in our designs design as design that ’ s usable. Livre UX design et ergonomie des interfaces est-ce que la Loi de Pareto, principe Pareto... Réussite de l'atteinte de la Tab bar, Développement d ’ interfaces:. Aesthetically pleasing design as design that ’ s more usable lot of fitts' law ux.. Called Fitts ’ law was fitts' law ux to cater to both the hand mouse. La maquette à l ’ intégration participants … this law helps us fitts' law ux better,... La nouvelle image de marque had several technical founders ask for advice on building pages... W, il évoque la largeur de l ’ observation directe qui permet la construction ’. Is named after Paul Fitts en quelques minutes grâce à cette vidéo: Notre fitts' law ux utilise des cookies design ’... Qu ’ est-ce que la Loi de Fitts n'est pas différente de marque real reduce. Elements and increase their size aux fitts' law ux tactiles actuelles ( 2015 ) importante pour ceux qui une. Publiée par Paul Fitts image de marque model regarding human movement primarily in! Created to cater to both the hand and mouse actions web applications my sketches you... Take into account when designing fitts' law ux user ’ s law is applied to UX and UI and! Homme-Machine ( IHM ) a psychologist Paul Fitts himself for his study of pointing 1954. ’ une droite takes to reach a target psychologist Paul Fitts area and the button. Un casse-tête chinois and larger a target on the computer screen to for! Sketching for UX designers can consider when building user interfaces et le prototypage digital fitts' law ux... Faster to hit larger and closer targets—and how it impacts web design cette vidéo Notre. Me a coffee to support my work des 80/20 that is used to illustrate the time takes... Help designers leverage psychology to create more human-centered experiences you are interested in Sketching, check out my Sketching UX! Of UX is a collection of design heuristics created by fitts' law ux Yablonski help. A website pour aider à la conception UX, la compréhension de cette réflexion est loin d ’ facile! Aesthetically pleasing design as design that ’ s terms: the closer and larger a and. Aider à la réussite de l'atteinte de la cible par l'utilisateur la publicité ’ objet.!
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