Chapter 4

Question 1

Expert Review methods are:

Answer 1

1. Heuristic evaluation:
2. Guidelines review:
3. Consistency inspection:
4. Cognitive walkthrough:
5. Formal usability inspection:

Question 2

Define bird’s-eye view:

Answer 2

printed screens laid out on the floor or pinned to walls to detect inconsistencies and unusual patterns.

Question 3

Many variant forms of usability testing have been tried, like:

Answer 3

• Paper mockups:
• Discount usability testing:
• Competitive usability testing:
• Universal usability testing:
• Field test and portable labs:
• Remote usability testing:
• Can-you-break-this tests

Question 4

Define Formative evaluation:

Answer 4

improves usability during development

Question 5

Define summative evaluation:

Answer 5

judges overall system success post-development.

Question 6

Limitations of usability testing are:

Answer 6

• It emphasizes first-time usage; we cannot estimate the performance after long periods of use.
• It has limited coverage of interface features

Question 7

Keys to successful surveys:

Answer 7

• Clear goals in advance
• Development of focused items that help attain the goals.

Question 8

Survey goals are:

Answer 8

• background
• experience with computers
• job responsibilities
• reasons for not using an interface
• feelings after using an interface

Question 9

What are acceptance tests?

Answer 9

the customers or managers set measurable goals for performance.
If the completed product fails to meet these acceptance criteria, the system must be reworked until success is demonstrated.

Question 10

Measured criteria in acceptance tests are:

Answer 10

• Time to learn specific functions
• Speed of task performance
• Rate of errors by users
• Human retention of commands over time
• Subjective user satisfaction

Question 11

The types of Evaluation During Active Use are:

Answer 11

• Interviews and focus group discussions.
• Discussion groups, wikis, and newsgroups.
• Continuous user-performance data logging.
• Online or telephone consultants.

Question 12

How do experiments work?

Answer 12

Experiments predict the relationship between two or more variables.

Question 13

What’s the difference between dependent and independent variables?

Answer 13

• Independent variables: are the things that the researcher can control (The design, The devices, etc).
• Dependent variables: the outcome of the experiment/independent variables (performance times, user satisfaction, error rates, etc).