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← People and their mental models

Jakob Nielsen's mental models

4 claims Jakob Nielsen made fit 3 mental models. Most often: Conventions (Jakob's law), Affordances and signifiers, The map is not the territory. Everything they said here.

Models we see in what they say

Our reading: their claim applies the idea without naming it. The claim is theirs; filing it here is ours.

Conventions (Jakob's law)

People bring what they learned on every other product, so familiar patterns usually win over novel ones.

Others who think with this model

Julie ZhuoKenneth ReitzMeaghan ChoiSebastiaan de With

Open the model page

Users spend most of their time on other sites, so they prefer yours to work the same way as the sites they already know.

  1. Jakob Nielsen Usability pioneer; co-founder of Nielsen Norman Group… 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. End of Web Designnngroup.com · 22 Jul 2000All korrents from this piece
    Their wordsUsers 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.

    ↗End of Web Designnngroup.com

    22 Jul 2000

A feature that works the same everywhere needs no teaching: a first-time visitor can use it by transferring what they learned on other sites.

  1. Jakob Nielsen Usability pioneer; co-founder of Nielsen Norman Group… On the contrary, a first-time visitor to a site will be able to use expert features without having to learn the site because he or she can transfer learning from other sites. End of Web Designnngroup.com · 22 Jul 2000All korrents from this piece
    Their wordsOn the contrary, a first-time visitor to a site will be able to use expert features without having to learn the site because he or she can transfer learning from other sites.

    ↗End of Web Designnngroup.com

    22 Jul 2000

Affordances and signifiers

An interface should show what can be done and where, and give people a model of how it works.

Others who think with this model

Don NormanAmelia WattenbergerJason FriedMeaghan ChoiNikita ProkopovRaph Kosterand 1 more

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Graphical interfaces have superior usability because they show people what can be done rather than requiring them to articulate what they want.

  1. Jakob Nielsen Usability pioneer; co-founder of Nielsen Norman Group… GUIs have superior usability because they show people what can be done rather than requiring them to articulate what they want. The Articulation Barrier: Prompt-Driven AI UX Hurts Usabilityjakobnielsenphd.substack.com · 26 Jun 2023
    Their wordsGUIs have superior usability because they show people what can be done rather than requiring them to articulate what they want.

    ↗The Articulation Barrier: Prompt-Driven AI UX Hurts Usabilityjakobnielsenphd.substack.com

    26 Jun 2023

The map is not the territory

Every model, word or plan is a simplified map of reality; useful when its structure matches, misleading when mistaken for the thing itself.

Others who think with this model

Alfred KorzybskiBen CarlsonDavis KedroskyEric RiesFreddie deBoerGibson Biddleand 4 more

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The average user is a dangerous statistical artifact: design for the gap between the median user and the heavy-use tail, not for a phantom mean.

  1. Jakob Nielsen Usability pioneer; co-founder of Nielsen Norman Group… In the world of high-stakes digital strategy, the “average user” is a dangerous statistical artifact. Don’t Design for Average Usersjakobnielsenphd.substack.com · 19 Mar 2026
    Their wordsIn the world of high-stakes digital strategy, the “average user” is a dangerous statistical artifact.

    ↗Don’t Design for Average Usersjakobnielsenphd.substack.com

    19 Mar 2026