test ewt reliability by using leading questions (form of post event info).
sample.
40 people - volunteers who responded to advert on paston site. 17 males and 23 females (age 17-45). randomly assigned a condition!
procedure!
shown a 10 second accident clip. group a asked how fast was the blue car travelling when it 'smashed' into the other car and group b the same but instead 'contacted'.
findings.
smashed predicted higher speed (40.9) than contacted (31.4).
evaluate for strengths.
consented to take part and debriefed (E). independant groups so no order effects. field so ecological validity.
evaluate for weaknesses.
volunteer sample. time consuming. lack of generalisability. extraneous variables.
