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Technology Acceptance, Adoption, and Usability: Arriving at Consistent Terminologies and Measurement Approaches
Published in Christopher M. Hayre, Dave J. Muller, Marcia J. Scherer, Everyday Technologies in Healthcare, 2019
Lili Liu, Antonio Miguel Cruz, Adriana Maria Rios Rincon
Performance Measures. This is a direct method of measuring and testing usability. This is a method used for evaluating whether usability goals have been achieved. The usability goals are assessed through metrics that measure the user performance while users are engaged with the technology being tested. The usability test is run by having a group of test users who perform a predefined set of tasks while the experimenter is collecting data such as performance time and number and types of errors (Nielsen, 1993). The performance measurements can be conducted either in a laboratory setting or by observing users in their natural work environment. Typical quantifiable usability performance measurements are time users take to complete a specific task, number of users’ errors, frequency of use of the manuals or the help system and amount of ‘dead’ time when a user is not interacting with the system (Nielsen, 1993, p. 194).
A User Tool for the Selection and Integration of In-Vehicle Information Systems
Published in Philip D. Bust, Contemporary Ergonomics 2007, 2018
The model is divided into three process sections: requirements analysis, design/ testing/development, and installation. These three process sections are closely, although not directly, linked to the three recognised process sections in this project (selection, installation and evaluation). The central section of the usability engineering lifecycle model is concerned with the design and development of the interaction design. This activity is supported by specifically defined usability goals, developed in the initial stage of the model and implemented through the use of a ‘style guide’. The core of the model is not within the scope of this project, as HCI and Ergonomic guidelines and standards currently exist relating to the design and development of IIS. However, the importance of maintaining the interaction between this element of the process model and additional lifecycle process activities is recognised.
Scenario-Based Design
Published in Guy A. Boy, The Handbook of Human-Machine Interaction, 2017
John M. Carroll, Steven R. Haynes
In the system development process, human–computer interaction closely couples design and evaluation. Envisionment scenarios can be detailed in terms of specific goals for user performance and experience, for example, how quickly on average users will be able to perform routine tasks, like scheduling a community meeting, with what error rates, and with what levels of satisfaction. Such explicit usability goals can become part of the design scenarios for the system, and subsequently can be assessed with test subjects.
Usability Requirements for Learning Management Systems in Open Distance Electronic Learning Environments: Considering Lecturers’ Views on Students’ Needs
Published in International Journal of Human–Computer Interaction, 2022
Sewisha Lehong, Judy van Biljon, Ian Sanders
Usability goals are typically presented in the form of specific questions or guidelines, which can be reduced to usability evaluation criteria (Preece et al., 2002). Such criteria enable researchers to assess systems, with the aim of identifying usability problems and improving the usability of those systems. A concept related to usability is that of user experience (UX) which focuses on how the users experience an interactive system. According to Roto et al. (2011, p. 7), this view “emphasizes the outcome and memories of an experience rather than its dynamic nature”. Examples of UX goals include systems that are fun, enjoyable, entertaining, satisfying, helpful, motivating, aesthetically pleasing, supportive of creativity, rewarding and emotionally fulfilling (Hinderks et al., 2019; Preece et al., 2002; Sharp et al., 2019).