Unformatted text preview: 's interaction with the system Usability Attributes (Nielsen, 1993) Learnability
Learnability is most likely the fundamental usability attribute as most systems
need to be easy to learn.
Efficiency of use
The systems should be efficient to use, that once the user has learned the system
can easily use it.
System should be easy to remember, so that a formal user is able to return to the
system after some period without having to relearn everything over again. 41 Subjective satisfaction
Subjective satisfaction refers to the extent the system is pleasurable to use. Usability Principles for WAP Services defined by Ramsay (2001) E-Navigation and Labeling
Unnecessary browse time
Help Facility RQ 2. How the m-commerce interface design can be made user-friendly?
The earlier research indicates that user centered interface design principles and usability
principles plays key role to improve interface design. Since, our research is intended to
first figure-out any existing flaws in WAP services and in second research question, we
will attempt to propose solutions to improve the interface design with the help of
valuable research conducted by Nielsen, 1990, Dix et al.,1993, and Preece et al.,1995. Usability heuristics for User Interface Design: Jakob Nielsen (1990) Visibility of system status
Use user’s own language
User control and freedom
Consistency and standards
Recognition versus Recall
Flexibility of use
Aesthetic and minimalist design
Sensible error messages
Help and documentation Principles to support Usability (Dix et al.,1993) Flexibility The multiplicity of ways the user and system exchange information. Robustness The level of support provided the user in determining successful achievement
The User-Centered Interface Design (Preece et al.,1995) Utility: the functionality of a system to improve ‘effectiveness’ and ‘efficiency’ Safety: is a principal importance in the design of safety critical systems. 42 Usability principles for mobile commerce Usability heuristics for User Interface Design Learnability Flexibility Rubustness Principles to
Support usability Memorability Usability Attributes Usability Engineering User Centered Interface Design Figure 3.1 Subjective
Satisfaction Emerged Frame of work 43 CHAPTER 4. METHODOLOGY The following chapter on methodology will describe different research methods used in
our study and explain the chosen methods. It will also describe the research purpose,
research approach, research strategy, data collection methods and analysis approach.
In addition, this chapter will describes the chosen sampling technique, the way the data
has been collected for this study and the techniques used to analysis the data. Finally,
the issues of the reliability and validity to present study are discussed. 4.1 Research Purpose
There are several techniques that could be used to conduct a research. Generally,
conducting a research is very much associated with the ability and knowledge of
researcher about a business domain and his/her expertise about problem area.
According to Yin (1994), there are three ways of research available when dealing with a
research problem: Exploratory
According to Yen (1994) exploratory research is often conducted when problem is not
well known or it has not been clearly defined yet, or its real scope is yet unclear. It
allows the researcher to gather the information as much as possible concerning a
specific problem. According to Chisnall (1997) exploratory research is designed to
identify the real nature of research problem and formulation of hypothesis for later tests.
Exploratory study gives valuable insight of the problem and result drawn from this
study is in firm grasp of essential characters. Exploratory research also provides
suggestive ideas through reviewing information from the problem area.
4.1.2 Descriptive Descriptive research is used to obtain information pertaining to the current status of the
phenomena to describe “what exists” with respect to variables or conditions in a
situation. Descriptive research is used when the objective is to provide a systematic
description that is as factual and accurate as possible or when the problem is well
structured and there is no intention to investigate cause/effect relation. It provides the
number of times something occurs, or frequency, lends itself to statistical calculations 44 such as determining the average number of occurrences or central tendencies (Yin,
4.1.3 Explanatory According to Chisnall (1997) explanatory research develops theory that can be used to
explain the empirical generalizations. Explanatory study is generally used when the
focus is on cause-effect relationships, explaining which causes produced which effects.
Explanatory research approach must be used when it is necessary to show that one
variable causes or determines the value of the other variables. A high level of flexibility
characterizes an exploratory case study and it is suitable when a problem is difficult to
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This document was uploaded on 12/31/2013.
- Fall '13
- The Land