Thinking Aloud Test

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A Thinking Aloud test is a psychological experiment that makes it possible to determine the user-friendliness of a user interface .

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The number of test subjects is given as 4–5, without giving any evidence.

A team of usability experts puts together one or more likely target groups and engages 4 to 5 test users from each target group. The test users are usually placed individually in front of an interactive test system on which they are supposed to solve some typical tasks . They are filmed and asked to think out loud (hence the name Thinking Aloud Test ).

The test system must at least be an interactive prototype , which does not have to be fully implemented, but interactivity can also be achieved by having a member of the usability expert team put correspondingly "painted" cardboard cards on a table .

The knowledge gained from this experiment are almost exclusively subjective impressions of the test users. It is not possible to determine the efficiency of the test system within a Thinking Aloud test , as the delays caused by thinking aloud have an incalculable effect.

A big problem with a Thinking Aloud test is that many test users fall silent over time because they are not used to commenting on everything they think. In order to prevent this phenomenon , for example, two testers can be connected to one system at the same time , whereby the conversation flow is maintained.

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