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Scientific processes

Scientific processes

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Question 217

A sports scientist wants to investigate whether consuming a high-caffeine energy drink improves reaction times in amateur athletes.

She recruits 40 participants and splits them into two distinct groups:

  • Group 1: Consumes 250 ml of a caffeinated energy drink 30 minutes before completing a computerised reaction time test.
  • Group 2: Consumes 250 ml of a lookalike, caffeine-free placebo drink 30 minutes before completing the identical computerised reaction time test.

Identify the experimental design used in this investigation and explain one strength of using this experimental design in this context.

[3]
Markscheme

Scientific processes Questions

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

689 exam-style questions on AQA A Level Psychology Scientific processes. Each one has a worked solution and a mark scheme showing where the marks go.

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