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Scientific processes

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Question 220

Study of Urban Air Quality and Commuter Wellbeing

An environmental consultancy is investigating the impact of a newly implemented "Low-Emission Zone" (LEZ) on the commute satisfaction and self-reported respiratory health of the local workforce.

To conduct this study, the researchers collected data from two groups:

  • Group A consisted of a volunteer sample of active commuters recruited via an online survey link shared on a popular local cycling club's social media page.
  • Group B (the comparison group) consisted of a convenience sample of motorists who were surveyed while parking in a premium multi-storey commercial car park situated just outside the boundary of the LEZ on a Tuesday morning.

The researchers compared the satisfaction and respiratory health scores of the two groups to draw conclusions about the general workforce commuting into the area.

a.

Explain one reason why there might be a problem of bias and generalisation in this study.

[2]
b.

How could the researchers modify their study to deal with this problem?

[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