Kaizen-UX

The User Experience

Blog By Peter W. Szabo

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How Many Test Users? 3… 5… 10? Try 46!

Quick win

Yes, this is yet another blog post on number of test participants, but this time it is based on very large samples and statistical wizardry. The total length of remote user research videos recorded by the WhatUsersDo platform in 2014 adds up to a jaw-dropping 2861 hours 03 minutes and 43 seconds. (It would take 120 days to watch them, if you would be watching user videos 24/7 without a break.) The core research for this article is based on 375 videos. After statistically analysing those results, I must say that 5 users is way too low. Most of the time you end up finding about 31% or less of all possible insights. How do I know what is the number of all possible insights? Because we conducted a very large-scale study, and found no unique insights, everything was repeated at least twice. As a result I have created “the big table of problems, research answers and number of tests to solve them“.
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Black Hat UX

A few weeks ago I met a guy at a workshop, and we started talking about women and fast cars. Naturally, after about two minutes we have arrived to user experience. He told me how his dream-job turned out to a nightmare-job. His boss cared for only one thing: conversions. At first, he fought back vigorously, but after a few days (of torture, one would assume) he bought a black hat, and ignored the crying hordes of the users. He did a few things that would make a mass murderer shiver.
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UX Kanban Style

Quick win

I will demonstrate to you how a methodology developed by a Japanese car manufacturer in the ‘50s can tremendously improve the workflow of the team you are managing, especially a creative team. After implementing Kanban at WhatUsersDo, we now have a streamlined workflow, which now can be overviewed and managed easily. We can see bottlenecks and pain-points at a glance, but most importantly everything works smoothly and in a transparent manner, reducing frustration and stress for the team members.
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