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Category: Design

Hick–Hyman Law and Design

Posted in Analytics, Architecture, Customer Experience, Design, Experience Design, and Service Design

Psychologists William Edmund Hick and Ray Hyman define “the time it takes for a person to make a decision as a result of the possible choices he or…

Fitts’s Law and Design

Posted in Design, and Experience Design

In 1954, Paul Fitts developed a model of human movement, Fitts’s law, based on rapid, aimed movement. Fitts’s model predicts that the time required to…

Perceived Affordance and Four Principles of Screen Interface Design

Posted in Design, and Experience Design

Psychologist James J. Gibson originally introduced the term “Affordance” in his 1977 article “The Theory of Affordances” and elaborated on it further in his 1979…

The Whole is Other Than the Sum of the Parts: Principles of Gestalt Perception

Posted in Design

I have been running a design review group since 2003. The Customer Experience Special Interest Group meets monthly. At a session, an organization presents its…

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