Loftus and Palmer Lab study DONT DO Flashcards
how many pps and what did they do
45 in the first experiment and were shown short video clips
how many groups were they split into for the first experiment
five groups with 9 pps in each
what were pps asked in the first experiment
about how fast were the cars going when they ________ each other
how many verbs did they use
smashed, collided, bumped, hit or contacted
resulrs from experiment 1
smashed had a mean estimate speed of 40.8 mph
contacted had 31.8
what did pps do for experiment two
150 pps were shown a short film
split into three groups
what was each group asked for experiment two
- how fast were they going when they HIT each other
- SMASHED
- was just asked about speed of vechiles
what was exp 2 asked to do after seeing the videos
a week later, all pps were asked if they could see any broken glass (there was none)
more people responded with no but still some results on smashed (yes= 16, no= 34)
conclusions
response bias occurs
wording of the leading question changed pps memory
strengths
- real life applications
2. lab experiment, high control, all pps shown same video
weaknesses
- lacked ecological validity, in real life you don’t experience car crashes on videos and don’t experience same emotions
- lacked population validity, used all student sample