Laws of UX
Heuristic
Aesthetic-usability effect
Users often perceive aesthetically pleasing design as design that’s more usable.
Fitt’s law
The time to acquire a target is a function of the distance to and size of the target.
Goal-gradient effect
The tendency to approach a goal increases with proximity to the goal.
Hick’s law
The time it takes to make a decision increases with the number and complexity of choices.
Parkinson’s law
Any task will inflate until all of the available time is spent.
Miller’s law
The average person can only keep 7 (plus or minus 2) items in their working memory.
Jakob’s law
Users spend most of their time on other sites. This means that users prefer your site to work the same way as all the other sites they already know.
Parkinson’s law
Any task will inflate until all of the available time is spent.
Oefening
content
Laws of UX
Principle
Doherty Threshold
Productivity soars when a computer and its users interact at a pace (<400ms) that ensures that neither has to wait on the other.
“Doherty’s Threshold dictates that a user experience turns from painful to addictive after the system feedback time drops below 400ms.”
“Progress bars help make wait times tolerable, regardless of their accuracy.”
Occam’s Razor
Among competing hypotheses that predict equally well, the one with the fewest assumptions should be selected
Pareto Principle
The Pareto principle states that, for many events, roughly 80% of the effects come from 20% of the causes.
Postel’s Law
Be liberal in what you accept, and conservative in what you send.
Tesler’s Law
Tesler’s Law, also known as The Law of Conservation of Complexity, states that for any system there is a certain amount of complexity which cannot be reduced.
Oefening
content
Laws of UX
Gestalt Principles
Gestalt Princinples
Wat zie je?
Gestalt Princinples
Gestalt principes beschrijven hoe je hersenen om gaan met visuele prikkels, de visuele perceptie.
Verschillende principes
Gestalt principes mbt groeperen
- Law of common region
- Law of proximity
- Law of similarity
- Law of Continuity
- Law of uniform connectedness
Andere
- Law of figure/ground
- Law of Prägnanz
- Law of closure
Law of common region
Elements tend to be perceived into groups if they are sharing an area with a clearly defined boundary.
Law of common region
Law of common region
Law of proximity
Law of proximity
Law of proximity
Law of proximity
Law of similarity
Law of similarity
content
Law of similarity
Law of continuity
Law of continuity
Law of continuity
Law of uniform connectedness
Elements that are visually connected are perceived as more related than elements with no connection.
Law figure/ground
Law figure/ground
Law of Prägnanz
Mensen vinden het gemakkelijker simpelere vormen te interpreteren en te onthouden = hou het simpel
“The more complex your design, product, or service, the less your users will want to use it, and the harder it is to communicate its value to them.”
“The simpler your design, product, or service, the more your users will want to use it, and the easier it is to communicate its value to them.”
Law of Prägnanz
Law of closure
The law of Closure refers to our tendency to complete an incomplete shape in order to rationalize the whole.
Law of closure
Laws of UX
Cognitive Bias
Peak-end Rule
People judge an experience largely based on how they felt at its peak and at its end, rather than the total sum or average of every moment of the experience.
Serial Position effect
Users have a propensity to best remember the first and last items in a series.
Von Restorff effect
Also known as The Isolation Effect, predicts that when multiple similar objects are present, the one that differs from the rest is most likely to be remembered.
Zeigarnik effect
People remember uncompleted or interrupted tasks better than completed tasks.
UX Thinking - laws of UX
By Evelien Rutsaert
