Janet is investigating attitudes to healthy eating. She is considering using a questionnaire or an interview.

Mark scheme

Marking points from the official mark scheme (Feb/Mar 2020). The mark or mark type is shown in brackets.

1. [1] 1 mark for explanation
2. [1] A written/online set of questions completed by the participant
3. [1] 1 mark for explanation
4. [1] A spoken/face-to-face/real-time questioning of a participant
5. [1] 1 mark advantage
6. [1] 1 mark link
7. [1] The participants all answer the same questions (advantage)
8. [1] So the attitudes to health eating are easy to compare (link)
9. [1] Quantitative data is collected (advantage)
10. [1] So differences in eating habits can be analysed statistically (link)
11. [1] Not face-to-face so less likely to be affected by social desirability (advantage)
12. [1] So less likely to lie if they eat badly (link)
13. [1] 1 mark disadvantage
14. [1] 1 mark link
15. [1] The questions are fixed so the researcher can't follow the participant's lead (disadvantage)
16. [1] So if a participant eats badly such as liking fatty foods / has a good diet such as eating vegetables this can't be explored specifically (link)
17. [1] They collect mainly quantitative data which doesn't allow participants much choice of answers (disadvantage)
18. [1] So the choices may misrepresent their actual eating habits such as allowing them to say they eat more fruit than they do (link)