Daniel is planning a correlational study. He is investigating the relationship between how happy a person is and how many friends they have.
- (a)Suggest how Daniel could operationalise each variable.[4]
- (b)Explain why Daniel should be concerned about the subjectivity of his data about happiness.[2]
- (c)Explain why Daniel should be concerned about one extraneous variable that could affect his data about friendships.[2]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2020). The mark or mark type is shown in brackets.
- 2 marks for operationalisation for a variable x 2
- Happiness:
- How likely they think they are to win a new game you play with them = 1
- On a score of 0 (not at all) to 5 (very) = 1
- Their score on a questionnaire asking about their mood = 1
- With questions like 'Do you think this year is going well? = 1
- Number of friends:
- Ask them to count their friends = 1
- Ask the how many contacts they have on their phone = 1
- Then take off all the tradespeople, work colleagues etc. = 1
- Tell them to only include (close) friends not (loose) acquaintances = 1
- 1 mark for explanation
- 1 mark for detail
- Happiness is subjective = 0 marks (repetition of question)
- Happiness is not objective = 0 marks (essentially repetition of question)
- A qualitative measure may subjectively scored by the researcher = 1 mark (explanation);
- because comments about happiness may need to be interpreted = 1 mark (detail)
- e.g. not everyone sees 'happiness' in the same way = 1 mark (explanation)
- because some people might think happiness is being calm, others might think it is being excited = 1 mark (detail)
- 1 mark for identifying potential extraneous variable, i.e. a third factor that affects friendships
- 1 mark for explanation
- How many close family they have: because someone with more family may need fewer friends to be happy;
- Religion: meeting people through religious services may mean that people have more acquaintances / need less support so have fewer friends;
- Whether they live in a built-up area: people in rural areas have less chance to make friends are there are fewer people;
- Age: older people's friends may be dead;
- Gender; women tend to have more friends than men;
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