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A Cultural-Historical Activity Theory Approach To Users, Usability And Usefulness, Helen M. Hasan
A Cultural-Historical Activity Theory Approach To Users, Usability And Usefulness, Helen M. Hasan
Faculty of Commerce - Papers (Archive)
This paper takes an historical overview of the field of Human-Computer Interaction. Itdescribes how the cognitive psychology emphasis on user involvement in systemsdevelopment of the 1980s reached its limit by the early 1990s. At this point the focus shifted onto support for the tasks of users using computer-based systems in real contexts, a focus that ideally suits the mobile, ubiquitous and social technologies of the new millennium. The Cultural-Historical Activity Theory provides an appropriate framework for understanding this phenomenon and is adopted in this paper to present the work, over a seven year period, of a usability laboratory grounded in …
Partnership With Partial Commitment: A Game Theoretic Approach, Amnon Levy
Partnership With Partial Commitment: A Game Theoretic Approach, Amnon Levy
Faculty of Commerce - Papers (Archive)
This paper derives the Nash-equilibrium degrees of commitment to a partnership where lack of full commitment fuels suspicion and increases potential losses for partners. The Nash-equilibrium commitment of each partner increases with her internal return, quitting cost and costs of being deserted and with her counterpart's external return and intrinsic capacity to detect lack of full commitment, but diminishes with her external return and intrinsic capacity to detect her counterpart's lack of full commitment and with her counterpart's internal return, quitting cost and costs of being deserted.