A social psychologist investigated the relationship between social identity and altruism by measuring the Ingroup Favoritism Index (IFI) and the Outgroup Altruism Score (OAS) of a sample of participants. The self-report scores (both scored out of 20) for eight participants are shown in Table 1.
| Participant | Ingroup Favoritism Index (IFI) score (out of 20) | Outgroup Altruism Score (OAS) (out of 20) |
|---|---|---|
| A | 18 | 3 |
| B | 7 | 15 |
| C | 17 | 5 |
| D | 8 | 14 |
| E | 14 | 8 |
| F | 15 | 7 |
| G | 12 | 10 |
| H | 17 | 4 |
Using the data in Table 1, calculate the mean score for the Ingroup Favoritism Index (IFI).
88 exam-style questions on Edexcel A Level Psychology Research methods and skills, covering Research methods and skills. Each one has a worked solution and a mark scheme showing where the marks go.