A researcher conducted a replication of Loftus and Palmer’s (1974) study on eyewitness testimony to investigate the effect of leading questions on recall. Participants watched a film of a minor car collision and were given a questionnaire. One group of participants was asked a question containing the verb 'collided', while another group was asked the same question with the verb 'bumped'. One week later, all participants were asked whether they recalled seeing any broken headlights (when in fact there were none in the film).
The results are shown in the table below:
| Recalled seeing broken headlights (Yes) | Recalled seeing broken headlights (No) | |
|---|---|---|
| Verb 'collided' | 12 | 18 |
| Verb 'bumped' | 3 | 27 |
The researcher analysed the data using a Chi-Squared test.
Explain two reasons why the Chi-Squared test was suitable for this study, with reference to the details provided above.
