Leading Questions- Loftus and Palmer 1974
Experiment 1: Procedure
45 p's were shown a series of traffic accidents and asked a series of questions about them including a critical question- "about how fast were the cars traveling at when the hit/smashed/bumped/contacted/collided with each other?" the verb varied in each condition.
smashed = 40.8 mh
collided= 39.3 mph
bumped= 38.1 mph
hit= 34.0 mph
contacted= 31.8 mph
Experiment 2: Procedure
To see if leading questions only bias a p's response or change the memory, p's were again shown a film of a car accident and were asked the same critical question as above, however they were asked to return a week later and asked a series of new questions including "did you see any broken glass?"
Smashed= 16 said yes. 34 said no
Hit= 7 said yes. 43 said no
Control= 6 said yes. 44 said no
in matched pairs, each partner watched a different video and in one condition they were encouraged to discuss the…