Exercise 9 - Mensch-Maschine-Interaktion 1 (MMI 1)
Exercise 9 - MMI 1
Topic: Quantitative User Studies
a) Write a summary (100-200 words) of the lecture on "Implementing Interactive Systems"
b) omitted this time :)
The URL for the videos has changed!
18. Student's T-TestStudent's t-test is a standard test for
statistical significance. Your task is to apply the test to your
results from the Steering Law test.
Determine whether the effect of
movement direction on task completion time is statistically
significant. Provide a short report (less than one page) containing a
description of the test conditions, a box diagram of the task
completion times for different movement directions and a statement on
the statistical significance of the results.
19. Research Project:For
the remainder of the course you are to plan, conduct, and analyze your
own quantitative user study. Pick one topic from those listed below.
Your tasks are:
(until 19./21. January 2009)
- Clarify any questions regarding the task
- Research related/existing work on your topic
- Find two or more interesting and (dis)provable hypotheses
- Determine what you need to measure
- Determine how to measure it
- Write a detailed proposal for your user study
(until 26./28. Janury 2009)
- Refine your study design
- Develop a prototype for testing your hypotheses
- Conduct a user study with at least 8 participants
- Document the user study and present first results
(until 2./4. February 2009)
- Analyze the results
- Determine statistical significance
- Test your hypotheses
- Document the project in a research report
Differences in SMS Typing Speed Between Touch Screen and Physical ButtonsBackground:
More and more mobile phones are equipped with touch screens instead of
a key pad. While touch screens can offer optical and acoustical
feedback, they lack tactile feedback.
Are on-screen buttons or physical buttons better suited for text/number
entry on mobile phones? Can optical feedback reduce the error rate on
touch screens? Is there a difference between multi-touch and T9?
Typing Speed Comparison for On-Screen Keyboard versus Physical Keyboard in Mixed TasksBackground:
Interactive surfaces are mostly used for pointing tasks. Typing on an
on-screen keyboard is seen as tedious. It is reasonably sure that
typing on a physical keyboard is faster than typing on an on-screen
keyboard. However, does this also hold true for mixed pointing/typing
tasks like selecting and annotating objects?
What is the overhead of switching between keyboard and mouse? What is
the overhead of using the fingers alternatingly for typing on the
on-screen keyboard and pointing?
Effect of Direction on Path Following SpeedBackground: The previous experiments on the Steering Law suggested that there is an effect of movement direction on task completion time.
Research Questions: Is there indeed a significant effect? Is the effect independent of input device (mouse/pen) and scale (hand/arm)?
Effect of Screen Size on Panning PerformanceBackground: When displaying large images on small displays, pan+zoom or pan+minimap are common interfaces.
Research questions: What effect has display size in relation to image size? Is panning on a large touch-screen easier than on a small one?
Effect of Input Device on Panning PerformanceBackground:
When panning an image on screen with a mouse, there is no direct input.
Panning the image with a finger or stylus obscures some of the screen.
Research Questions: Is panning an image with a mouse faster than with a touch screen?
Quasi-Simultaneous Interaction Using Mouse and Touch ScreenBackground:
Mouse and touch screen are two pointing devices with different
characteristics. Usually only one of them is used, depending on setting.
Is a combination of mouse and touch screen suitable for certain
pointing tasks (e.g. coarse positiong by touch, fine positioning using
the mouse)? Is the combination faster that touch screen or mouse alone?
Submit your solution via UniWorx.
Unless otherwise specified, all files have to be either Adobe PDF or
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Please put all files belonging to one sub-task of this assignment into
sub-folder inside the
UniWorx will tell you about missing files. Some files may be marked as "unerwartet" - this is ok.
./Do not use any other directory layout.