Usability refers to the extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency and satisfaction in a specified context of use ( ISO 9241-11 ). It is tightly related to User Experience
Usability deficiencies are the primary source of operational loss, by:
Source: Landauer, 1996
Short-term usability is about providing seamless access to the primary features.
Operational errors and usability are two sides of the same coin. For example, many of the usability issues in operating consumer products, such as home TV, are due to use errors (Zonnenshain & Harel, 2009, download ).
The term Long-term usability refers to the experience of seamless, carefree interaction in continuous, repeated operation. It is a main concern in office and production systems, and is greatly affected by the rate of
Updated on 30 Mar 2017.