Anika wants to carry out an investigation to see whether personality traits are linked to stress. She placed posters in the local doctor's surgery asking for volunteers with a Type A personality. She asked them to contact her if they were willing to take part in her investigation and complete a questionnaire about their personality and stress.
Explain one way Anika could improve her investigation to increase validity. (2)
AO2 (1 mark), AO3 (1 mark)
Credit one mark for accurate identification of an improvement in terms
of validity in relation to the scenario (AO2).
Credit one mark for justification/exemplification of the improvement in
terms of validity (AO3).
For example:
- Anika should approach more doctors' surgeries to get a wider
range of patients to increase the population validity (1) so she
could ensure that her sample was more representative of the
characteristics of all Type A personalities rather than just those of
her local doctor's surgery who may differ from the target
population (1).
Look for other reasonable marking points.
Generic answers score 0 marks.
(2)
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