Lemma
No. 103

User Research

User Research

User research is the practice of studying people's needs, behaviors, and motivations to inform design decisions.

Why it matters

It replaces guesswork with evidence. Building on assumptions is risky; research grounds decisions in how people actually think and act.

In depth

User research spans qualitative methods (interviews, observation, usability tests) and quantitative ones (surveys, analytics, A/B tests). It happens before, during, and after design. The goal is to understand users deeply enough to design the right thing, not just build the thing right.

Real-world example

Interviewing ten customers about how they currently track expenses before designing a budgeting app reveals real needs and pain points.

Visual

Principle

User Research

Replacing assumptions with what people actually need and do.

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