Stop 07 · Usability & Heuristic EvaluationTopics · 4/8

Usability Testing Methods

In short

Watching one real person struggle with your design teaches you more than a week of team debates. The question is which kind of test fits what you need to learn.

Beyond Phase 3's introduction — moderated versus unmoderated testing, remote versus in-person, and when each method fits a given research question and timeline.

The jaadu watches eagerly as a friend tastes a spoonful of biryani from a big pot.

Think of it like this

Mom tasting the new recipe

You can make someone taste your biryani while you watch their face and ask questions. Or you can send a box home and ask them to send a review later. Both are testing. One gives depth, the other gives speed and numbers.

Watch it happen

Picking a usability test

Usability test

Moderated

Unmoderated

In person

Remote call

Testing tool

Guerrilla

1/4Moderated: you sit with the person, live. You can ask 'what are you thinking?' and follow up.

The big ideas

What you need to know

Give tasks, not tours

Say 'Book a cab to the airport for 6 am', not 'Look around'. Real tasks show real problems.

Think aloud

Ask people to say what they're thinking as they go. Their confusion becomes visible.

Small rounds work

Nielsen's well-known advice is around five users per round to find most big problems, then fix and test again.

Watch, don't help

If you jump in to explain, you hide the problem. Stay quiet and take notes.

Save yourself the pain

Common mistakes

Oops

Asking 'Do you like this design?'

Do this instead

Watch what they do on a task. Opinions are unreliable, behaviour tells the truth.

Oops

Testing only with your designer friends.

Do this instead

Test with people who match your real users, like parents for a school fee app.

Your mission

Run a guerrilla test

~40 min

Quick check

You need to understand why people get confused on a new checkout flow. Which method fits best?

Go deeper

1Compare moderated and unmoderated usability testing for a hypothetical time-constrained project.
2Learn the trade-offs of remote testing (convenience) versus in-person (richer observation).
3Practice writing a usability test script with clear, unbiased task instructions.