factors effecting eyewitness testimony Flashcards
what are factors that can effect EWT
stress
post wvwnt information
what can stress do to EWT
increased levels of stress can lead to a decrease in memory perfomance extreamly hightened stress levels can lead to a decrease in accurate memory of a crime
what other factors can lead to unreliable EWT
post event information
what is post event information
information the EW recives after the crime hass occoured which may impact the memory of the crime
what factors can influence post event information
media
news
other witnesses
what previously learnt study can be used in regards to stress as an effecting factor
yuille and cutshall
does yuille and cutshall oppose or support this research
oppose
what did yuille and cutshall find
found that pp had more adrenaline at time of event compared to after and so stress had no effect on accuracy of memory
how does this then oppose
t/f suggests that stress has no significant impact on reliability of EWT
what is a supporting evidance to the idea of stress effecting EWT
clifford and hollin
what did clifford and hollin find
found the higher the level of violence shown the poorer participants recall of an assult
how does this support the idea of increased stress on affecting EWT
t/f increases the validity of the theory of stress decreasing EWT as the high levels of violence caused increased levels of stress leading to poorer recall of crimes
what is a sypporting evidance of post event information
loftus and palmer
why loftus and palmer
loftus and palmer foud that leading questions asked affter a crime could impact EW. they found that those asked ‘smashed’ guessed a much higher speed of the car compared to those who where asked ‘contacted’
how does this support the post event information
t/f increases the validity of post event information in altering EWT as it shows the effect of leading questions on the EWT
