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Usability includes methods of measuring usability, such as needs analysis [3] and the study of the principles behind an object's perceived efficiency or elegance. In human-computer interaction and computer science, usability studies the elegance and clarity with which the interaction with a computer program or a web site (web usability) is
Hallway testing, also known as guerrilla usability, is a quick and cheap method of usability testing in which people — such as those passing by in the hallway—are asked to try using the product or service. This can help designers identify "brick walls", problems so serious that users simply cannot advance, in the early stages of a new design.
Functionality, usability, reliability, performance and supportability are together referred to as FURPS in relation to software requirements. Agility in working software is an aggregation of seven architecturally sensitive attributes: debuggability, extensibility, portability, scalability, securability, testability and understandability.
Usability engineering is a professional discipline that focuses on improving the usability of interactive systems. It draws on theories from computer science and psychology to define problems that occur during the use of such a system.
Usability goals must address the three usability components, i.e. effectiveness, efficiency and satisfaction. [2] Their definition, for each of those components, must rest on the characteristics of the tasks that the tested system is supposed to support. [2] More practically, Mayhew [5] proposes that their definition should refer to:
A computer monitor provides a visual interface between the machine and the user. Human–computer interaction (HCI) is research in the design and the use of computer technology, which focuses on the interfaces between people and computers. HCI researchers observe the ways humans interact with computers and design technologies that allow humans ...
Usability.gov—usability basics with focus on web usability; Evaluating Websites for Accessibility—accessibility is a crucial subset of usability for people with disabilities. This W3C/WAI suite includes a section on involving users in testing for accessibility. Usability News from the Software Usability Research Laboratory at Wichita State ...
The concept of usability is defined of the ISO 9241 standard by effectiveness, efficiency, and satisfaction of the user. Part 11 gives the following definition of usability: Usability is measured by the extent to which the intended goals of use of the overall system are achieved (effectiveness).