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Nt1310 Unit 2.2 Usability Evaluation Techniques

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2.2 Usability Evaluation Techniques
2.2.1 Pluralistic Usability Walkthrough
The Pluralistic Walkthrough (also called a Participatory Design Review, User-Centred Walkthrough, Storyboarding, Table-Topping, or Group Walkthrough) is a usability inspection method used to identify usability issues in a piece of software or website in an effort to create a maximally usable human-computer interface. The method centres on using a group of users, developers and usability professionals to step through a task scenario, discussing usability issues associated with dialog elements involved in the scenario steps. There are however limitations due to this technique being only as quick as the slowest person in the group.
2.2.2 Heuristic Evaluation
A heuristic evaluation is a usability inspection method for computer software that …show more content…
Abbreviations, function keys, hidden commands, and macro facilities are very helpful to an expert user.
3 Offer informative feedback.
For every operator action, there should be some system feedback. For frequent and minor actions, the response can be modest, while for infrequent and major actions, the response should be more substantial.
4 Design dialog to yield closure.
Sequences of actions should be organized into groups with a beginning, middle, and end. The informative feedback at the completion of a group of actions gives the operators the satisfaction of accomplishment, a sense of relief, the signal to drop contingency plans and options from their minds, and an indication that the way is clear to prepare for the next group of actions.
5 Offer simple error handling.
As much as possible, design the system so the user cannot make a serious error. If an error is made, the system should be able to detect the error and offer simple, comprehensible mechanisms for handling the error.
6 Permit easy reversal of

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