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Research methods and skills

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Question 224

Research Methods: The 'Dawn and Dusk' Study

Researchers conducted a laboratory experiment to investigate whether cognitive processing speed differs between "morning people" (Dawn types) and "evening people" (Dusk types) when tested at different times of the day.

To ensure internal validity, the researchers implemented several control measures, including:

  1. Control 1: Asking participants to self-report their caffeine and stimulant intake on a questionnaire prior to testing.
  2. Control 2: Using standard fluorescent ceiling lighting in a classroom with windows to keep the testing environment bright during both the 08:00 and 20:00 testing sessions.

Explain how to improve the effectiveness of the two controls used in the 'Dawn and Dusk' study.

[6]

Research methods and skills Questions

  1. A Level
  2. /Psychology
  3. /Research methods and skills

Practise Edexcel A Level Psychology Research methods and skills with exam-style questions for A Level Psychology. 657 questions covering Research methods and skills, matched to the Edexcel A Level Psychology (9PS0) 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