Chapter 6 Pyshology of testimony

Revision cards

HideShow resource information

loftus 1974-guilty verdict if witness is present

what was the aim of this study?
to investigate if presence of a witness affects verdict (even when short-sighted)

what was the IV (conditions)of this study?
witness, no witness and short sighted witness

what was the DV of this study?
Verdict: Guilty or not guilty

what were the results of this study?
no witness= 18% guilty, witness= 72%guilty, Shortsighted witness= 68% guilty

what was the conclusion of this study?
we assume guilt if witness was present, even if they were short sighted (perception = guilty)

1 of 7

loftus & zanni1975- leading questions

what is the aim of this study?
to find if leading questions can affect testimony

what was the IV?
2 questions -
did you seea broken headlight?
did you see the broken headlight?

what was the DV of this study?
did leading questions affect testimony or not

what were the results of this study?
a broken headlight- 7% they had The broken headlight- 17% they had

what was the conclusion in relation to cognitive processes and testimony?
leading questions do affect testimony

2 of 7

goldstein&chance -recall of faces better than snow

what was the aim of the study?

comparing recall of women's faces with snowflakes and inkblots

what was the IV of this study?

women's faces, snowflakes, inkblots

what was theDV in this study?

correct identification

what were the results of this study?

inkblots 48%, snowflakes 33%, accuracy of face recall (good) 71%

3 of 7

ainsworth1995 accurate ID of suspect

what is the aim of the study?
1) to investigate reliability of photo fit ID
2)does unconcious transference occurs

what was the IV of the study?
con1- 6 photo fits including suspect,
con2- 6 photo fits including the good samaritan

what was the DV of the study?
correct indentification

what were the results of the study?
1st con 40% picked suspect, 2nd con- incorrectly identified the goods samaritans on 50% of occasions

what was the conclusion of thisstudy?
the chances of selecting the suspect or good samaritan were roughly equal suggesting that unconcious transference was playing a part in ID of suspects

4 of 7

peters 1987

what was the aim of this study?
to see whether children can be considered reliable witnesses and are able to be used as one to give evidence in court

what was the sample of this study?
children in a dentist waiting room-mild stress compared to court room

what was the IV of this study?
photo conditions picture present and picture absent

what was the DV of this study?
correct picture

what were the results of this study?
30%could pick out correct photo, 70% got it wrong, 100% every child always picked someone even if not there.
what was the conclusion of this study?
shows children feel underpressure due to adult/authority figure, so they're not reliable witnesses

5 of 7

crombag-source monitoring error can distort memory

what was the aim of the study?

whether source monitoring error can distort memory

what was the procedure of the study?

crombag asked people if they remembered seeing a film of boeing 747 crashing into amsterdam block of apartments

what were the results of the study?

60% said yes even though no film of crash had been taken. They presumably heard about it and therefore formed an image in their minds of what hadhappened, making them suggestible to the idea that they had watched the video.

6 of 7

evaluation issues

what are the weaknesses of this chapter?

EV-mainly experimental methods used, which gave studies low EV

etichs-not protected, reliving bad memories

demand characteristics - people feel pressured to pick someone/pic especially children due to authoritive figure

what are the strengths of this study?

usefulness- tells us eye witness testimony isn't always reliable

7 of 7

Comments

No comments have yet been made

Similar Psychology resources:

See all Psychology resources »See all Crininological and Forensic Psychology resources »