Introduction to Information Systems Models and Methodologies - High Level Models and Methodologies for Information Systems - page 17

Fig. 1.7 Different levels of IS research

where requirements are well established, face-to-face communication is not ef cient

(as opposed to documentation), and user participation is not necessary at all times.
A good example is government projects, where methodical organization and rigor
are essential. The second category is suitable for medium- to small-sized projects,
heavily user-centered, where requirements are likely to change and there is constant
feedback between developers and users alike. This is the ideal approach for many
commercial software projects.
In regard to evaluation of the project, usability models are appropriate primarily
to determine how the system can closely interrelate with the user s cognitive and

learning processes, thus facilitating their adaptation to it. Quality evaluation models
allow developers to determine what will shape the user

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s acceptance of the new
system, and success evaluation models will help developers in measuring the
implementation of the system, providing valuable metrics and feedback for future
updates and/or systems.

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References

Ajzen, I. (1991). The theory of planned behavior. Organizational Behavior and Human Decision
Processes, 50(2), 179 - 211.
Alter, S. (2008). Defining Information Systems as work systems: Implications for the IS field.
Business Analytics and Information Systems, Paper 22.