Interaction Cost

The guru of usability, Jakob Nielsen, once again takes up a basic concept and explains it in the most understandably way. This time, it is Interaction Cost.

Interaction Cost occurs whenever the user needs to read, scroll, search, type, click, wait, remember, and so forth. Obviously, it is necessary to reduce the interaction cost as much as possible. If the cost of using a software exceeds the expected gain, the software has a negative expected usability and therefore shall not (and will not) be used.

A very nice article.

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