schemas - mental frameworks that allow us to process information quicker about objects people ect - by making mental shortcuts - can lead to stereotyping and ignoring important information
reconstructive memory
memory not accurate at recording all events -may reconstruct them when we recall them causing errors
leading questions
questions may imply a participants answer changing participant memory or emotion
response bias
not a change in memory - but due to emotional pressure changes their response
substitution bias
actual change to a memory
post event discussion
when recalling events by one witness alters the accuracy of recall by another witness
Loftus and Palmer 1st research
Participants asked "how fast was the car going when it SMASHED, BUMBED, COLLIDED or CONTACTED
found extreme verbs created faster responses in mph
contacted = 31mph whereas smashed = 40mph
suggesting misleading info can influence recall in eyewitness testimonies
Loftus and Palmer 2
participants asked "how fast the car was going when the car "hit" or "smashed"" - then after a week after participants where then asked "was there any broken glass" (there was no broken glass in the car accident"
participants in the group smashed where2x more likely to say yes
suggesting that leading questions can create substitution bias - changing memory
Gabbert et al
participants in 2 groups in pairs - watched a crime act out from different perspectives, each including unique parts. one group of pairs could discuss after watching and the other couldn't
group which could discuss after watching the crime scene - found that 71% said things that they couldn't have seen compared to the 0% who couldn't discuss
suggest witnesses will change their account of the crime to match others memoryconformity.
missleading info real world application
EWT can be improved through research conducted e.g Loftus and Palmer to prevent Leading questions - creation of the cognitive interview
Experimental design - misleading information
Due to most studies being conducted in Labs studies can lack ecological validity. because when giving EWT there is lack of consequences for giving incorrect statement - could this be different if they where under oath ? or if the EWT lead to actual convictions
Lab studies - misleading info
demand characteristics due to participants giving the experimenters the answers they think they want - in research leading questions this can lead to response bias