In Experiment 2 of Loftus and Palmer's (1974) study on eyewitness testimony, how was the independent variable operationalised?
Participants were split into two groups: one asked about the speed of cars using the verb 'smashed' and one using the verb 'hit'.
Participants were split into three groups: one asked about the speed of cars using 'smashed', one using 'hit', and a control group not asked about speed.
Participants were split into five groups, each receiving a question containing a different critical verb ('smashed', 'collided', 'bumped', 'hit', 'contacted').
Participants were split into three groups: one asked about seeing broken glass, one asked about speed using 'smashed', and one asked about speed using 'hit'.
163 exam-style questions on OCR A Level Psychology Memory, covering Loftus and Palmer (1974): Eyewitness testimony and Grant et al. (1998): Context-dependent memory. Each one has a worked solution and a mark scheme showing where the marks go.