Factors Affecting EWT : Misleading Information Flashcards
(13 cards)
Define ewt
A legal term given to the term of eyewitnesses in court to give evidence for the identity of someone who has committed a crime
What are the 2 types of misleading information
A leading question
Post event discussion
Define leading question
A type of question that prompts a respondent towards providing and already determined answer
What study investigated leading questions and give the procedure
Loftus and palmer
45 students were shown 7 films of car accidents and after watching them were told to complete a questionnaire, a critical question being how fast the car was going and a different verb was given for each group, e.g collided, smashed, bumped, hit, contacted
What were the results of loftus and palmers reeaserch into leading questions
Smashed: 40.5
Collided: 39.3
Bumped: 38.1
Hit: 34
Contacted: 31.8
Showing that dramatic verbs le
Define post event discussion
Occurs when more than one witness, discussion may influence the accuracy of each witnesses recall of the event. Discussion may contaminate the witnesses memory bcs they combine misinformation from other witnesses with their own memory
What research investigated post event discussion and outline the procedure
Fiona gabbert and her colleagues
Pps were studied in pairs and told to watch a video of a crime but at different povs, so one partner could see one element and the other could see other elements
They were then told to discuss what they saw with each other and complete a recall test individually
What were the findings of Fiona gabberts study of post event discussion
71% pps mistakenly recalled aspects of the vid they did not see but picked up on the discussion
In the control group w no discussion the figure was 0%
Witnesses often go along with each other bcs of social approval or because they think the other person was right
Give all the evaluation points for misleading info for EWT
+ real world application
- artificial tasks
- individual differences
- lab exp
Evaluate misleading info: + real world application
Research on misleading info has important real life applications due to the serious consequences of inaccurate EWT
Loftus found that leafing questions distort memory so police must phrase questions carefully
Psychologists may also use EWT research to enhance the legal system and may serve as expert witnesses
Evaluate misleading info: - artificial tasks
Loftus and palmer used film clips and not real accidents lacking real life stress and emotion
This reduces the validity and makes the findings less applicable to real life situations involving EWT
Evaluate misleading info: - individual differences
Age affects accuracy as older people tend to be less accurate in eyewitness reports than younger adults (anastasi and Rhodes)
There’s also own age bias where all age groups are more accurate at identifying people their own age, there’s research bias as studies use younger adults
Evaluate misleading info: + and - lab experiments
Many studies involving EWT tests are lab experiments where there is lots of controls to minimise the affects of extraneous variables increasing the reliability and replicability
However lab experiments have low ecological validity and pps may demonstrate demand characteristics as they don’t want to let the researcher down and want to appear helpful and attentive, so when given a question they don’t know the answer to, they guess, which affects the results