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Introduction
This text contemplates and contributes to the theory of Interaction Design. There exist a number of texts that have already explored Interaction Design. Some of these consider the role of design in Human-Computer Interaction, a field bounded by Cognitive Psychology and Computer Science. These texts usually describe the nature of design as related to a user interface design on a screen—emphasizing the specific elements that show up in an interface or examining examples of best practices, heuristics, or guidelines for creating interfaces. This type of text is frequently found in schools of computer science and may actually be used as a textbook for engineering students interested ...

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