Towards the experimental study of usability

Methods to support human-centred design

“…Usability is now widely recognized as critical to the success of an interactive system or product (Shackel, 1981(Shackel, , 1984Eason, 1984;Whiteside, Bennett & Holtzblatt, 1988;Fowler, 1991;Shackel, 1991;Nielsen, 1994;ISO, 1997b). Many poorly designed and unusable systems exist which users "nd di$cult to learn and complicated to operate.…”

Usability Testing of Fitness Mobile Application : Case Study Aded Surat App

“…According to Eason, usability is an interaction between three variables: task, system and user, which feed into the user's response to each task episode [44]. Over the course of a number of task episodes, a pattern of response develops, which indicates more or less usability.…”

“…Then these three variables decide the usability depending on the reaction of the user. A positive outcome will mean continued user learning [44]. [47] which is summarized below: …”

CAFE OF EVE: a method for designing and evaluating interfaces

“…The perceived usefulness or utility of the product. Eason (1984) has argued that ".....the major indicator of usability is whether a ... [product] ..... is used .....I' As Booth (1989) points out, it may be possible to design a product whch rates high on the LEAF precepts, but which is simply not used.…”

“…If usability is to be more than an ephemeral concept, we must agree on its constituent ingredients. Stanton & Baber (1992) draw upon a decade of work represented by Shackel (1981), Eason (1984) and Booth (1989) to suggest the factors above serve to shape the concept of usability and define its scope. These are as follows.…”