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Human-Computer Interaction (HCI):
Copyright 2002 © Kumar, Unuakhalu, Carigan
Ashok Kumar [email protected]
Mike Unuakhalu [email protected]
Jim Carigan [email protected]
Developing field diagnostic tools for existing interfaces; seeking continuing improvement in course delivery software
Work in progress
San Antonio TX
November 2, 2002
The Problem
• Software Usability
– After the honeymoon
– How to evaluate
– How to communicate
– How to improve
• Your Point of View
San Antonio TX
November 2, 2002
Related Work• Larry Constantine & Lucy Lockwood
• Ben Shneidermann
• Christian Gram
• Roger Pressman
• Alan Cooper
• Robert Bailey
Related Work
San Antonio TX
November 2, 2002
• Usability
• HCI
• Users
• Stakeholders
Definitions
San Antonio TX
November 2, 2002
• Usability– The effectiveness, efficiency, and satisfaction with which specified users
achieve specified goals in particular environments.» ISO 9241
– Ease of use; a combination of learnability, rememberability, efficiency in use, reliability in use, and user satisfaction
» Constantine and Lockwood
– Accomplishment vs Excise
• On-task actions vs HCI management» Cooper
Definitions
San Antonio TX
November 2, 2002
• HCI
– Human Computer Interaction
• The User Interface
• User Goals
– HCI encompasses the interface within the context of how well the information system achieves the users’ goals.
Definitions
San Antonio TX
November 2, 2002
• Users
Definitions
San Antonio TX
November 2, 2002
• Stakeholders
Definitions
San Antonio TX
November 2, 2002
Ways to think about Usability
• Who’s in charge
• We must remember this . . .
• Consistency
San Antonio TX
November 2, 2002
Ways to think about Usability
• Access
• Less interference
• Progressive
• Support Real Work
• Context
San Antonio TX
November 2, 2002
Ways to think about Usability
• Structure
• Simplicity
• Visibility
• Feedback
• Tolerance
• Reuse
San Antonio TX
November 2, 2002
• Communication
• Analysis
• Feedback
Solutions
San Antonio TX
November 2, 2002
• Questions
• Answers
• Analysis
• Goals
Solutions
San Antonio TX
November 2, 2002
Summary
• Communication
• Agreement
• Structure
• Many Eyes
• Follow Through
Summary
San Antonio TX
November 2, 2002
Conclusions
• Metrics are necessary
• Refinement must be continuous
• Improvement must be continuous
• Time
San Antonio TX
November 2, 2002
Future Work
• Refine the tools
• Expand the sample
• Refine the scope
• Pursue promising leads
Future Work
San Antonio TX
November 2, 2002
Questions?
San Antonio TX
November 2, 2002
Thank You!
San Antonio TX
November 2, 2002
Bibliography
[AGAR02] Agarwal, R. and V. Venkatesh, “Assessing a firm’s Web presence: a heuristic evaluation procedure for the measurement of usability.” Information Systems Research, v. 13, n. 2, June 2002.
[CONS99] Constantine, L. L. and L. A. D. Lockwood, Software for use; a practical guide to the models and methods of usage-centered design, ACM Press, New York, 1999.
[BAIL96] Bailey, R. W., High Performance Engineering, Prentice-Hall, Upper Saddle River, NJ, 1996.
[COOP95] Cooper, A., About face; the essentials of user interface design, IDG Books Worldwide, Foster City, CA
[GRAM95] Gram, C., "A Software Engineering View of User Interface Design." Proceedings of the IFIP TC2/WG2.7 Working Conference on Engineering for Human-Computer Interaction, 1995.
[GREE91] Greenbaum, J. and M. Kyng (Eds), Design at work: cooperative design of computer systems. Lawrence Erlbaum Associates, Inc., Hillsdale, NJ, 1991.
[JIAN98] Jiang, M. and E. Ting, “Course design, instruction, and students’ online behaviors: a study of instructional variables and student perceptions of online learning, Paper, Annual Meeting of the American Educational Research Association, 1998.
[MACI01] Maciaszek, L. A., Requirements analysis and system design; developing information systems with UML, Addison-Wesley, Harlow, England, 2001.
[PRES01] Pressman, R. S., Software engineering; a practitioner's approach, 5 th ed., McGraw-Hill, Boston, 2001.
[RASK00] Raskin, J., The humane interface; new directions for designing interactive systems, ACM Press, New York, 2000.
[SHNE90] Shneiderman, B., Designing the User Interface, 3rd ed., Addison-Wesley, Boston, 1990.
[WIEG99] Wiegers, K. E., Software Requirements, Microsoft Press, Redmond, WA, 1999.
