April 2011
Beginner
256 pages
5h 40m
English
Content preview from 100 Things: Every Designer Needs to Know About PeopleBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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88. People Make Predictable Types of Errors
In addition to thinking about the consequences of errors, as in the van der Linden study described previously, there is another useful error taxonomy. The Morrell (2000) taxonomy classifies two types of errors: performance and motor-control.
Performance Errors
Performance errors are mistakes you make while you’re going through the steps to complete a procedure. Morrell further divides performance errors into commission errors, omission errors, or wrong-action errors.
Commission errors
Let’s say you’re trying to get a task done, such as turning on the Wi-Fi on your tablet. All you have to do is touch the On/Off control on the screen, but you think that you also need to touch the drop-down menu and select ...
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