Jakob’s Law
A principle stating that users spend most of their time on other websites and prefer your site to work the same way as all the other sites they already know.
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Difference Threshold
The minimum difference in stimulus intensity that a person can detect, also known as the just noticeable difference (JND).
Iconic Memory
A type of sensory memory that briefly holds visual information for a fraction of a second.
Perceptual Set
The tendency to perceive and interpret information based on prior experiences and expectations, influencing how different users perceive design differently.
Hick’s Law
A principle that states the time it takes to make a decision increases with the number and complexity of choices available.
Visual Cueing
The use of visual elements to draw attention to important information or guide user actions.
Directed Cognition
The process by which attention is guided by internal goals and external stimuli, affecting how information is processed and remembered.
Object Constancy
The principle that elements in a digital interface maintain consistent appearance, position, and behavior across different pages and states to help users maintain orientation and familiarity.
The User Is Drunk
A usability testing approach where designers assume that users are easily confused and distracted, focusing on simplicity and clarity in design.