Why users click, scroll, and abandon. The psychology behind every decision.
Explore the 32 principlesWhy do users click, scroll, and abandon? The answers lie in cognitive psychology. This part reveals the mental models and decision-making patterns behind every user action—from attention and memory limits to perception biases. Master these 27 principles and you'll predict user behavior before you design, not after you ship.
Stop defending designs with "it feels right." When a stakeholder challenges your layout, reference Miller's Law on cognitive load. When explaining navigation depth, cite Hick's Law. These 27 principles give you peer-reviewed ammunition for every design review.
Bad UX decisions become expensive technical debt. Understanding why users abandon forms or miss CTAs helps you push back on specs that will fail. Build interfaces that align with how brains actually work—not how PMs assume they work.
"Users don't like it" isn't actionable feedback. These principles translate vague complaints into specific fixes: "Users abandon because choice overload triggers decision paralysis (Hick's Law)." Turn opinion battles into evidence-based roadmap decisions.
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