The Anti-Mac User Interface (Don Gentner and Jakob Nielsen)

Perceived stability means that elements in the computer interface should not be changed without the user’s involvement. For example, icons on the desktop and windows should reappear as they were when the user last closed them. But it is a sure sign of a lack of confidence if a person’s last words before leaving the room are, “Don’t move until I get back.” In a computer interface, the principle of perceived stability implies the computer will most likely make things worse on its own and the user will be unable to function in a changing environment. We’re still children in the computer age, and

The Anti-Mac User Interface (Don Gentner and Jakob Nielsen)
Layered Interaction Analysis of Direct Manipulation (Jakob Nielsen)

If the file foo.txt was a text file and the application required a graphics file, this command would constitute an error on the semantic level of the dialogue even though it was syntactically correct. Therefore, the user would get some kind of error message ranging from “ILLEGAL FILE” to “The file ‘foo.txt’ is a text file and cannot be opened since [Name-of-Application] only supports graphics files”-depending on the attention to usability engineering during the design of the application. In any case, assuming that the user actually wanted to open foo.txt in the current application, the

Layered Interaction Analysis of Direct Manipulation (Jakob Nielsen)
Assessing the Usability of a User Interface Standard

Three of The Data Company’s released products were carefully inspected by the authors to assess their compliance with the standard. The developers of the system were confronted with the list of violations and in no case disputed they were indeed in conflict with the standard. In order to carry out the inspection, it was necessary to develop a standardized checklist listing all the rules in the standard and dividing them into three groups: Mandatory rules, voluntary rules, and guidelines for the development process (as opposed to rules for the resulting product). The checklist had 22 mandatory

Assessing the Usability of a User Interface Standard



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Design | Ensure High Contrast for Text Over Images