By Siegfried Treu (auth.)

A spouse to the author's User Interface Evaluation, this ebook info a scientific and accomplished method to degree and overview new or latest human-computer interfaces. The textual content will serve either as a reference resource, and as a complement to its sister volume.

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Developers and implementors, with detailed technical knowledge about implementation tools and techniques and about how an interface design was (or should be) implemented. • (Experimental) observers, qualified to obtain evidence through direct observations and recordings about selected features and aspects of HC! performance. , evaluative data. • HC! experts, able to supply factual data about HC! " 2. 3), which may be utilized in a manner analogous to target users. Two or more computers 34 CHAPTER 3 may be involved in distributed, network-based HeI applications.

Providing explicit and implicit association links among objects In choice and meaning of vocabulary and other objects used in interaction Making user feel at ease (see also P34, P39) With specified user factors In functional capabilities ... Agreeable, suitable, ... In commands, spatial location, ... In surrounding layers of support for the user In interactive behavior, and output of changing objects Providing user override, ... When errors occur To avoid the need to correct errors (PI6) To enable clear, concise communication To add other functions, commands, ...

To enable the formal analysis of HCI performance by comparing it against some theoretical models, the supportive tools are very specialpurpose. They depend on whatever model(s) is(are) used for comparison. Indeed, those models are a kind of tool. In addition, the analysis must have a very clearly specified procedure, or algorithm, to guide the analyst through the formal analysis. SUPPORTIVE TOOLS AND TECHNIQUES 41 Finally, a great variety of "tests" are available as potential sources of evaluative data.

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