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Scientific processes

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Question 239

A fitness instructor investigated the effects of a new virtual reality (VR) visualization technique using two separate groups of club runners:

  • Group X: one group of runners completed a 10-minute VR visualization session before a 5km time trial.
  • Group Y: a different group of runners rested quietly for 10 minutes before the same 5km time trial.

Afterwards, the instructor calculated the average completion time (in minutes) for each group, as shown in Table 1.

Table 1: Average 5km completion times (minutes) for Group X and Group Y

Group X (VR visualization)Group Y (Rest control)
21.524.2

The instructor concluded that the VR visualization session may not have been the only factor that caused the difference in average completion times between Group X and Group Y. The instructor was concerned because the runners in each group had different baseline running abilities.

Explain one way the instructor could change the experimental design to deal with this issue.

[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