User Interface Design and Ergonomics - National Open University of ...

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7.0 REFERENCES AND FURTHER READING Nielsen, J. and Molich, R. "Heuristic evaluation of user interfaces." Proc. CHI'90 Conference on Human Factors in Computer Systems. New York: ACM, 1990, pp. 249-256. Nielsen, J. "Finding usability problems through heuristic evaluation." Proc. CHI'92 Conference on Human Factors in Computer Systems. New York: ACM, 1992, pp. 373-380. Molich, R. and Nielsen, J. "Improving a human-computer dialogue: What designers know about traditional interface design." Communications of the ACM, 33 (March 1990), pp. 338-342. Nielsen, J. "Usability Engineering." San Diego, CA: Academic Press, 1992. Wharton, C., Rieman, J., Lewis, C., and Polson, P. "The cognitive walkthrough: A practitioner's guide." In J. Nielsen and R.L. Mack (Eds.), Usability Inspection Methods, New York: John Wiley & Sons (1994). 176
MODULE 4 UNIT 3 EVALUATING THE DESIGN WITH THE USERS Table of Contents 1.0 Introduction 2.0 Objectives 3.0 Main Content 3.1 Evaluating The Design With The Users 4.0 Conclusion 5.0 Summary 6.0 Tutor Marked Assignment 7.0 Further Reading and Other Resources 1.0 INTRODUCTION Having read through the course guide, you will be introduced to evaluating designs with users. Choosing the users to test, getting the users to know what to do, providing the necessary systems and data needed for the test are the various necessary processes in this evaluation and they will be discussed in detail. 2.0 OBJECTIVES By the end this unit, you should be able to: o Explain how to choose users. o Highlight the significance of the user’s presence. o Explain the necessary process in evaluating with users. 3.0 MAIN CONTENT 3.1 EVALUATING WITH THE USERS You can not really tell how well or bad your interface is going to be without getting people to use it. So as your design matures, but before the whole system gets set in concrete, you need to do some user testing. This means having real people try to do things with the system and observing what happens. To do this you need people, some tasks for them to perform, and some version of the system for them to work with. Let us consider these necessities in order. 3.1.1 CHOOSING USERS TO TEST The point of testing is to anticipate what will happen when real users start using your system. So the best test users will be people who are representative of the people you expect to have as users. If the real users are supposed to be doctors, get doctors as test 177
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] NATIONAL OPEN UNIVERSITY OF NIGER
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National Open University of Nigeria
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Summary ...........................
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UNIT 3 - GRAPHICAL USER INTERFACE (
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Assignments File Tutor-Marked Assig
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2 DESIGN and DESIGNING GOOD USER IN
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need both the study unit you are wo
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CIT 711: USER INTERFACE DESIGN AND
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UNIT 1 FUNDAMENTALS OF USER INTERFA
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3.3 TYPES OF USER INTERFACES Curren
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3.5 USER INTERFACE MODALITIES AND M
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Table of Contents 1.0 Introduction
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3.1.1 DESIGNING A GOOD USER INTERFA
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widgets properly is to read and und
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Figure 1:- Showing that alignment o
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6.0 TUTOR MARKED ASSIGNMENT a. How
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A graphical user interface is a typ
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Operating System. It is easy for a
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A list of items from which to selec
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collaborative work. For example, sc
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MODULE 1 UNIT 4 HUMAN COMPUTER INTE
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3.3 DIFFERNCES WITH RELATED FIELDS
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window blinds to automobile braking
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Wickens, Christopher D., John D. Le
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The International Ergonomics Associ
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approach, the Gilbreths reduced the
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3.6 BENEFITS OF ERGONOMICS The thre
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Another key to reducing lumbar disc
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MODULE 2 - USER INTERFACE DESIGN TE
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methods include inspection methods,
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Determine time of each operation (b
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unable to understand new informatio
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M cones, or, misleadingly, green co
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Motor skill which is a learned seri
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MODULE 2 UNIT 2 UNDERSTANDING USERS
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The users of a system must be ident
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This example brings up an important
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whether you want to have a palette
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Task analysis which includes identi
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MODULE 2 UNIT 3 USER CENTERED DESIG
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or small body text is also hard to
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Introduction to User-centered desig
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organizations themselves. Interacti
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After thorough analysis using vario
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Interaction design which is the dis
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In human-computer interaction and c
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The preferred method for ensuring u
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3.4 ISO STANDARDS FOR USABILITY ISO
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In this unit, you have been introdu
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affect the way the command is execu
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• Guides the user via the predefi
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The term direct manipulation was in
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There are two important reasons for
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108
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UNIT 1 PROTOTYPING Table of Content
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Figure 12: The iterative steps of p
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select print Figure 13: An interfac
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Ambler, S.W. & Constantine, L.L. (2
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3.2 LOW-FIDELITY PROTOTYPES Low-fid
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Figure 14:- Example of Sketching II
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Much more important for features th
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DENIM, an extension of SILK, is a t
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Page 128 and 129: Another problem is that native widg
Page 130 and 131: interfaces, so that a realistic sim
Page 132 and 133: UNIT 3 INPUT AND OUTPUT MODELS Tabl
Page 134 and 135: Recall that perceptual fusion means
Page 136 and 137: 3.2 OUTPUT MODEL There are basicall
Page 138 and 139: directly-mapped pixel image will no
Page 140 and 141: Most stroke models also include som
Page 142 and 143: UNIT 4 MODEL VIEW-CONTROLLER (MVC)
Page 144 and 145: 3.3.2 AS A DESIGN PATTERN MVC enco
Page 146 and 147: The Views are XForms controls for s
Page 148 and 149: UNIT 5 LAYOUTS AND CONSTRAINTS Tabl
Page 150 and 151: 3.5 CONSTRAINTS Constraints are rel
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Page 154 and 155: MODULE 4 UNIT 1 TECHNIQUES FOR EVAL
Page 156 and 157: a. Card Sorting Card sorting is a w
Page 158 and 159: Rapid prototyping is a method used
Page 160 and 161: 3.2.1 THE USE OF PROTOTYPES It is o
Page 162 and 163: Dumas, J.S. and Redish, J.C. (1999)
Page 164 and 165: the users' respect for you as a pro
Page 166 and 167: the users will be and what kind of
Page 168 and 169: speed whenever the average load was
Page 170 and 171: Table 4:- Table: Average times for
Page 172 and 173: phases: list the actions, and then
Page 174 and 175: Nielsen and Molich used their own e
Page 178 and 179: users. If you do not, you can be ba
Page 180 and 181: If you are led to develop more and
Page 182 and 183: It's very easy to shape the comment
Page 184 and 185: a. Analyzing the Bottom-Line Number
Page 186 and 187: you use. But then you need some way
Page 188 and 189: ecruit test users with more similar
Page 190 and 191: MODULE 4 UNIT 4 OTHER EVALUATION IS
Page 192 and 193: 3.2 CURRENT ISSUES CONCERNING EVALU
Page 194 and 195: 2.0 OBJECTIVES By the end this unit
Page 196 and 197: It provides a real focal point for
Page 198 and 199: 3.3.4 CONDUCTING THE TEST Having co
Page 200: The stages involved in usability te
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