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Scientific processes

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Question 268

Context / Scenario

An engineering psychologist conducted a study to compare the usability of two integrated development environment (IDE) layouts, Layout Alpha and Layout Beta, on debugging efficiency.

  • Software developers in Group Alpha debugged a suite of 10 buggy code modules using Layout Alpha.
  • Software developers in Group Beta debugged the same suite of 10 buggy code modules using Layout Beta.

The psychologist recorded the total time taken by each participant to successfully resolve all 10 bugs, finding that developers in Group Beta completed the task significantly faster than those in Group Alpha.

Question

Outline what is meant by randomisation in experimental design and suggest one way it could have been used in this debugging experiment.

[2]

Scientific processes Questions

  1. A Level
  2. /Psychology
  3. /Scientific processes

Practise AQA A Level Psychology Scientific processes with exam-style questions for A Level Psychology. 689 questions, matched to the AQA A Level Psychology (7182) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

Question bank