Download Usability Engineering. Scenario-Based Development of by Mary Beth Rosson PDF

By Mary Beth Rosson

  • ''This ebook is excellent for a problem-based curriculum during which scholars at the same time study solid improvement methods whereas finishing a time period venture. The booklet provides very good suggestions, and the case research technique is a wonderful organizer and motivator. eventually, the right kind problem-based textbook.''
    —Don Norman, Nielsen Norman team

    ''One of the good issues approximately this ebook is that it identifies the place tradeoffs exist in constructing consumer interfaces. Too many books offer instructions as though they have been absolute; regrettably, this isn't the case. Tradeoffs has to be consistently made, and knowing how one usability aim can effect one other is necessary to strong design.''
    —Jon Meads, Usability Architects

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Sample text

Another aspect of work analysis is the study of workplace artifacts. The tools that people use to carry out their tasks can provide considerable insight into how they do their work (Carroll & Campbell 1989). 2). The features of each artifact encourage different kinds of actions and thoughts. For example, a pencil has a shape and weight compatible with the action of holding it between two or more fingers, sliding it across paper, and so on; the buttons on a phone have just the right size and resistance for h u m a n finger-presses; and a tape dispenser has a weight and sharp serrated edge to enable one-handed tearing of tape segments.

The system was designed to make work more efficient by eliminating unnecessary phone conversations. In her interviews with telephony veterans, Sachs found that the phone conversations were far from unnecessary. The initiation, conduct, and consequences of these conversations reflected a wealth of tacit knowledge held by the engineers--selecting the right person to call (with relevant expertise for the problem), the "filling in" on what the first worker had or had not determined or tried to this point, sharing of hypotheses and testing methods, iterating together through tests and results, and carrying the results of this informal analysis into other possibly related problem areas.

The root concept is multifaceted, including a statement of project vision and rationale, an initial analysis of project stakeholders, and an acknowledgment of starting assumptions that will constrain or otherwise guide the development process. The root c o n c e p t is related to the stakeholder analyses of soft systems methodology (see Checkland 1981; Checkland & Scholes 1990). A project's starting vision and rationale may come from m a n y different sources. , inefficiency or dissatisfaction with a business process).

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