Self-Reported Metrics - Measuring the User Experience: Collecting, Analyzing, and Presenting Usability Metrics - page 143

Usefulness
• It helps me be more effective.
• It helps me be more productive.
• It is useful.
• It gives me more control over the activities in my life.
• It makes the things I want to accomplish easier to get
done.
• It saves me time when I use it.
• It meets my needs.
• It does everything I would expect it to do.

Ea se of Learning
•I learned to use it quickly.
• I easily remember how to use it.
• it. is easy to learn to use it.
• I quickly became skillful with it.

Satisfaction
•I am satisfied with it.
• I would recommend it to a friend.
• It is fun to use.
• It works the way I want it to work.
• t is wonderful.
•I feel I need to have it.
• t is pleasant to use.

Ease of Use
• It is easy to use.
• It is simple to use.
• It is user friendly.
• It requires the fewest steps possible to accomplish
what I want to do with it.
• It is flexible.
• Using it is effortless.
• I can use it without written instructions.
• I don't notice any inconsistencies as I use it.
• Both occasional and regular users would like it.
• I can recover from mistakes quickly and easily.
• I can use it successfully every time.

Users rate agreement with these
statements on a seven-point Likert
scale, ranging from strongly
disagree to strongly agree.
Statements in italics were found to
weight less heavily than the others.

Figure 6.11 The USE questionnaire. From the work of Lund (2001); used with permission.

VISUALIZING DATA USING RADAR CHARTS

Some of the techniques for capturing self-reported data yield values on several dimensions.
For example, the USE questionnaire can yield values for Usefulness, Satisfaction, Ease
of Use, and Ease of Learning. Similarly, CSUQ can yield values for System Usefulness,
Information Quality, Interface Quality, and Overall Satisfaction. One technique that can be
useful for visualizing the results in a situation like this is a radar chart. Assume you had the
following summary values from a study with the USE questionnaire:

• Usefulness= 90%

• Satisfaction= 50%

• EaseofUse= 45%

• EaseofLearning= 40%

Plotting these values as a radar chart would give you the chart shown here.

Usefulness

90%

80%

70%

60%

50%

40%

30%

20%

10%

Ease of Learning Satisfaction 0%

Ease of Use