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Laws of UX

A compilation of top UI design best practices.

Laws of UX screenshot
Category:Educational
Subcategory:Best Practices
Pricing:Free

What it costs

Free tier
Yes

Fully free collection of UX principles; posters, cards and a book are sold separately via the author's Big Cartel store.

Auto-checked on 8 August 2026Source

About Laws of UX

What Is Laws of UX?

Laws of UX is a free educational resource that compiles key UI design best practices derived from psychological principles. Created by Jon Yablonski, it serves as a practical guide for applying psychology to develop more human-centered and intuitive products and digital interfaces. In the design workflow, Laws of UX fits as a reference material for UX designers and developers seeking to align interfaces with user perception and behavior patterns, particularly during ideation, research, and validation phases.

What Laws of UX Does

  • Explains psychological principles relevant to UX design, such as how aesthetically pleasing design elicits positive user responses.
  • Deconstructs familiar apps and experiences to illustrate applications of psychology in interface design.
  • Covers predictive models including Fitts's law, Jakob's law, and Hick's law for usability predictions.
  • Links psychology concepts to UX heuristics and provides techniques like contextual inquiry and user interviews.
  • Addresses ethical implications of applying psychology in design processes.
  • Offers a framework for integrating psychological principles into practical design workflows.

How Laws of UX Can Be Used

Laws of UX supports designers in real-world scenarios by providing quick references for decision-making. For instance, during wireframing, teams reference laws like Hick's law to limit menu options and reduce user decision time. In usability testing, principles such as Jakob's law guide consistency with familiar patterns across apps, helping avoid user confusion. Developers apply Fitts's law to optimize touch targets for mobile interfaces, improving accessibility. The resource also aids in team discussions on ethics, such as avoiding manipulative personalization, and incorporates methods like eye-tracking for validation. Overall, it functions as a reference tool throughout the design process, from initial sketches to final reviews.

Who Is Laws of UX For?

Laws of UX targets UX designers, UI developers, product teams, and researchers who aim to ground their work in psychological foundations. It suits beginners learning core principles as well as experienced professionals needing a concise reference for justifying design choices based on human behavior. Non-designers, such as product managers or stakeholders, use it to understand heuristics like Postel's law for resilient interfaces or the peak-end rule for memorable experiences. The resource applies to projects involving digital products, apps, and websites where intuitive, human-centered design is essential. Visit Laws of UX

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