factors affecting accuracy of ewt - anxiety ao1

Question 1

who and when investigated weapon focus effect (neg impacr of anxiety on ewt)

Answer 1

johnson and scott
1976

Question 2

procedure of johnson and scott

Answer 2

ppts in a waiting room for an interview
they heard an argument whilst waiting
ppts in either low or high anxiety condition
in low anxiety condition sm1 walked out off room holding a pen dripping ink
in high anxiety condition sm1 walked out w knife dripping blood

Question 3

findings of johnson and scott 1976

Answer 3

when aksed to describe face of person holding weapin recall was worse in high anxiety condition

Question 4

findings of johnson and scott 1976 - percentage recall for both conditions

Answer 4

49% for low anxiety
33% recall for high

Question 5

conclusios of johnsoj ajd scott 1976

Answer 5

low percentsge recall in high anxiety condition was due to weapon focus effect where they paid attention to weapon then face of person holding the weapon

Question 6

who did research on positive impact of anxiety of ewt and when

Answer 6

yuille and cutshall 1986

Question 7

procedure in yuille and cutshall 1986

Answer 7

ppts were allw itnesses to shooting in a shop
there were 21 witnesses
13 agreed to partake in stufy
4-5 months after incident they were asked to give ewt of what they saw
this was recorded and compared to their origniak
ppts also asked to judge how stressed theyd been on a 7 point scale
recall accuracy and stress levels at the time of the event were recorded

Question 8

findings of yuille and cutshall 1986 and give percentages

Answer 8

recall was better when stress levels were high
88% accuracy when stress levels were high vs 75% when stress levels were low

Question 9

how can contradictiry findings from yuille and cutshall were high anxiety have better recall 88vs 75 but in johnson and scott ppts in high anxiety condition had worse recall 33 vs 4

Answer 9

yerkes and dodson law 1908
inverted u theory

Question 10

what is yerkes and dodsons law

Answer 10

looks at the relationship bet emotional arousal and performance

Question 11

who applued yerkes and dodson law 1908 to ewtand what did he say

Answer 11

deffenbacjer 1983 said lower levels of anxiety produce lower levels of recall
increase in anxiety can increase accuracy of recall - up to a certain point - known as optimun
past this high anxiety decreases accuracy of recall