Usability Evaluation Models - High Level Models and Methodologies for Information Systems - page 80

Chapter 5
Usability Evaluation Models

5.1 Introduction

The use of interface and WWW by individual and organizations become an
essential to enhance performance and job satisfaction, as these tools should be
designed in an ef

cient way to prevent frustration and vexation among users.
These tools should be friendly, ef cient, effective, and easy to use. To ensure if

interfaces, systems, and WWW are meeting users c usability

evaluation models should be employed before the implementation to examine and
assess their functionality and performance, as well as to identify the problems if
they are available.
These models will assist designers and HCI experts to generate exceptional
solutions to improve users

' needs, a speci

work and satisfaction and reduce frustration.
Finally, to understand users

'

' mind-sets and performance and to improve the t

between humans and the system, cognitive engineering should be presented.

5.2 Cognitive Engineering

Cognitive involves user activities from thinking, reading, writing, talking,
remembering, making decision, planning, solving problems, and understanding
people. Norman ( 1993 ) discriminates two types of cognitive, namely experiential
and re ects perceive, act and react as it needs a

certain level of motivation and enthusiasm, i.e., driving a car, reading a book,
playing a video game, or having a conversation. On the other hand, the re

ective. The experiential mode re

ective
mode involves thinking, comparing, and decision making. This mode leads to
creativity and innovation, i.e., writing a book, designing, and learning. Both modes
need speci

c technologies, as well as are essential for everyday life.