Practise Edexcel Psychology questions using control groups, randomisation and order controls to reduce confounding effects in experimental research.
Philippa carried out an investigation into memory. She used a random sample of 16 participants from her local college of 208 students.
- In Condition A participants learned and recalled a list of words in a quiet classroom.
- In Condition B the same participants learned and recalled a second list of words in a noisy coffee shop.
Describe how Philippa could have used counterbalancing in her investigation.
AO2 (2 marks)
Credit up to two marks for an accurate description in
relation to the scenario.
For example:
- The first half of the participants on Philippa's list could
have learned and recalled in the quiet classroom
(Condition A) and then the noisy coffee shop
(Condition B) (1), the second half of the participants
could have learned and recalled in the noisy coffee
shop (Condition B) and then the quiet classroom
(Condition A) (1).
Generic answers score 0 marks.
Look for other reasonable marking points.
(2)