1.5.3 Independence of Testing

Question 1

A certain degree of independence makes … due to differences between the …

Independence is not, however, a … e.g. developers can effectively…

Answer 1

the tester more effective at finding defects author’s and the tester’s cognitive biases.

replacement for familiarity,
find many defects in their own code.

Question 2

Independence levels

Work products can be tested by:
- their …
- by the …
- by t…
- or by t…

Answer 2

• author (no independence)
• author’s peers from the same team (some independence)
• testers from outside the author’s team but within the organization (high independence)
• testers from outside the organization (very high independence)

Question 3

For most projects, it is usually best to carry out testing:
- with multiple levels …
- dev…
- test t…
- bus…

Answer 3

• of independence
  
  • developers performing component testing and component integration testing
  • team performing system and system integration testing
  • business representatives performing acceptance testing

Question 4

Main benefit of independence testing is that independence testers are likely to recognize different kinds of … because of their:
- d…
- t…
- b…

Answer 4

failures and defects compared to developers
- different backgrounds
- technical perspectives
- biases

Question 5

Moreover, independent testers can:
- v…
- c…
- or disp…

Answer 5

• verify
• challenge
• disprove assumptions made by stakeholders during specification and implementation of the system

Question 6

Independence drawbacks:

Independent testers may:
- be …
- may lead to a lack …
- comm…
- an adv…

Answer 6

• isolated from the development team
  
  • of collaboration
  • communication problems
  • an adversarial relationship with the development team

Question 7

More independent drawbacks:

Developers may lose a sense of…

Independent testers may be seen as a …

Answer 7

responsibility for quality.

bottleneck or be blamed for delays in release.