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December 10, 2004


Martin L.

I agree that Think Aloud has the potential to disrupt natural use of an interface. The interesting thing is that I've seen it work in both a booster and drag on usability in lab settings.

Some subjects get distracted talking (and an even smaller number get a little intoxicated on their own opinion!) and lose track of the task they were asked to perform.

Other subjects actually seem to improve their performance by thinking aloud - i.e. "So, I'm thinking that this button here will toggle the thingy to off, but now I say that, it that doesn't really make sense, because the thingy is already off..."
Sometimes articulating thoughts verbally organises thought patterns that were a little disorganised previously.

Having said that - even in the latter situation where the user (probably) completes the task successfully, an observer has learned that the toggle button in question is a potential usability problem. All goes to show that careful analysis of usability results are crucial


It's not where I look, it's what I want. I can sit on Park Avenue and 'look' at hundreds of women---but this tells you nothing about which woman I will approach to ask out on a date. Knowing what I look at only tells you what I looked at. The past does not equal the future.

Betsy Caporale

Do you know of any eye-gaze technology that is compatible with Mac OS X?

Richard Hearne

Excellent piece and now bookmarked as a fantastic resource.

Thank you :)

Pozycjonowanie stron

Great information!

Dennis van der Heijden

The Tobii P10 is great for Usability studies... and way more confortable... since there is no need to wear anything!

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