HCILecture_Week8C - , ^ > , ^ / / & The setting is an urban...

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Evaluation: review lecture Human-Computer Interaction Comp 3900 and Comp 6390 Semester 2, 2010 1 Lecture 8C: Human-Computer Interaction, Semester 2, 2010
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First, a joke The setting is an urban high school farewell to the senior students (Year 10) A Year 7 student speaks at the farewell and Lecture 8C: Human-Computer Interaction, Semester 2, 2010 2 tells a joke: Q: What is the difference between a Year 10 student and a brick wall?
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Answer A: You can talk to a brick wall. Lecture 8C: Human-Computer Interaction, Semester 2, 2010 3
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Evaluation Evaluation is an exercise in communication: Speaker -> Listener Lecture 8C: Human-Computer Interaction, Semester 2, 2010 4 Writer -> Reader The speaker or writer must be aware of the needs of the listener or reader
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Evaluating human-computer interaction What sort of evaluation? 1. Analytic Heuristic evaluation, looking at whole of system Walkthroughs, looking at specific user-interaction Lecture 8C: Human-Computer Interaction, Semester 2, 2010 5 sequences Experts working with scenarios, tasks and possibly prototype versions of the HCI system Conduct in the laboratory Not involving user studies (but still check Ethics issues) Not necessarily concerned with measurable performance (unless, for example, you are dealing with heuristics about response times)
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What sort of evaluation? (2) 2. Human factors studies These involve people acting as users of the HCI system but not necessarily real-life users (yes, Ethics) Looking at components of the HCI system Can be quantitative (e.g. Xerox STAR – first study) Control for participant and situation variability Lecture 8C: Human-Computer Interaction, Semester 2, 2010 6 Measuring performance of the components against an external standard (e.g. Is the system fast enough?) Comparing alternative ways of implementing the HCI using measurements of performance with each Often uses statistical measures of probability Can also get observations and participant feedback to look for explanations and unexpected events.
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What sort of evaluation? (3) 2. Human factors studies (continued) Can be qualitative (e.g. Xerox STAR – third study) Observing how users interact with an HCI system ften a new system) Lecture 8C: Human-Computer Interaction, Semester 2, 2010 7 (often a new system) User version of a cognitive walkthrough Plan to observe specific things Look out for unexpected events
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What sort of evaluation? (4) 2. Human factors studies (continued)
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This note was uploaded on 10/12/2010 for the course CSIT COMP3900 taught by Professor Duncanstevenson during the Three '10 term at Australian National University.

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HCILecture_Week8C - , ^ > , ^ / / & The setting is an urban...

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