Factors Affecting EWT: Misleading Information

Question 1

Define EWT

Answer 1

Evidence given to police

By one who witnessed crime or accident

Question 2

Define misleading info

Answer 2

Incorrect info ginen to EWT after event

= gives wrong impression

May be in post event discussion (PED)

OR leading qus

Question 3

What is a leading Qu

Answer 3

Qu which as phrased=

Suggests certain answer

Question 4

Post Event Discussion ( PED )

Answer 4

= when x2 or more witness to event

May discuss what seen

May influence accuracy of eachothers recall

Question 5

Explain Loftus x Plamer 1st study

Answer 5

1974

45 us students= 5groups of 9

= all saw vid of car crash

Verb used on speed = manipulated

Smashed
Collided
Hit
Bumped
Contacted

Smashed= estimate 40.8 mph
Contacted= 31.8 mph

F= speed affected by verb

A single word FX EWT accuracy

Question 6

Explain Loftus x Plamer 2nd Study

Answer 6

On FX of leading QUS on later mem

150 students, 3 groups

All= vid of car crash + questionnaire

= asked how fast when…
1= smashed
2= hit
3= no speed Qu

1 week later asked if seen broken glass
(There was none)

Verb= distorted mem of OG event 1 week later= power of lead Qus

Question 7

Explain the:
1)Response Bias x
2)Substitution Explanation

Answer 7

1) wording dosent FX Real mems, just how they decide to answer

2) wording changes PPTS memory

Question 8

Explain Gabbert et al study 2003

Answer 8

A: FX of PED on EWT

P: 60 students, 60 adults

See vid of gurl stealing money

Filmed at diff points

Either indiv or in group

Co- witnesses told seen same vid= not true. They discussed

F: 71% co-witness group= recall info not seen. Without= no unseen info.

C: highlights issue of PED + effect on EWT accuracy