02

Decisions & Actions

How users choose and interact

Learn the psychological principles behind decision-making and motor control to design interfaces that are fast and effortless to use.

⌘K

Topics (8)

Motor Control

Fitts's Law

Why bigger and closer targets are easier to hit

Decision Making

Hick's Law

Why fewer choices lead to faster decisions

Response Time

Doherty Threshold

Why 400ms is the magic number

Complexity

Tesler's Law

Complexity must live somewhere

Resilience

Postel's Law

Be liberal in what you accept

Decision Making

Cognitive Biases

How irrational thinking shapes decisions

Decisions

Applying Psychological Principles

Translating psychology into team design principles that guide daily decisions

Decisions

Design Ethics and Responsibility

The obligation that comes with using psychology to shape human behavior

← Previous ChapterPerceptionNext Chapter →Attention & Memory