Universal Principles of Design by Lidwell William & Holden Kritina & Butler Jill

Author:Lidwell, William & Holden, Kritina & Butler, Jill [Butler, Jill]
Language: eng
Format: epub
Publisher: Rockport Publishers
Published: 2003-10-01T07:00:00+00:00

Designers can obtain accurate and complete interaction models through personal use of the system, laboratory testing (e.g., focus groups and usability testing), and direct observation of people interacting with the system, or similar systems. Use of the system by the designer will reveal obvious design problems, but will fail to reveal the problems of interaction that emerge when the system is used by people who are unfamiliar with it. Laboratory testing is useful for evaluating designs in a controlled environment, but must be conducted with care, as the artificial context, and resulting expectation effect, can compromise the validity of the results. Direct observation of users in the target environment is the preferred method for acquiring accurate information about how people interact with systems, but is costly and impractical for designs that are not yet publicly available.

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