Loftus And Loftus

Question 1

Aim

Answer 1

To provide support for the “weapon focus” effect

Which affects witnesses during when a weapon is present

Question 2

design

Answer 2

Lab

Question 3

Participants : exp 1

Answer 3

Exp 1 - 36 students = uni of Washington
Aged 18-31
13 ps - psych students
23 ps - advert paid $3.50 credit

Question 4

Participants in exp 2

Answer 4

80 student from Washington uni

Question 5

Procedure

Answer 5

2 sets of 35mm slides

Each set - 18 slides

2 conditions - exp and control

In exp - person b pulled out a gun
In Control - person b pulled a Cheque

Each slide - 1.5 sec

Given 12 photos of people = rate them (1-6) for person b

Eye movement measured with EOG

Question 6

How long were each slide for

Answer 6

1.5 sec

Question 7

How many slides in a set

Answer 7

18

Question 8

How many photos given and what are the rating scales

Answer 8

12 photos

1-6

Question 9

Results

Answer 9

Ans to questions were not Sig diff in both groups

8.5% due to chance

In control = 39.8% (7) recognised person b
In exp = 11.1% (2) recognised person b

No diff in self report of confidence

Question 10

Results - eye movement

Answer 10

In exp = 3.72 sec looking at gun

In Control = 2.44 sec looking at Cheque

Question 11

What was concluded

Answer 11

Ps spent longer looking at the gun - also exp group found it harder to identify person b

Weapon focus would be a larger factor in real life, as witness will be more aroused = increase in attentional narrowing

Question 12

Background; what are the variables that affect recall to recognise a face (4)

Answer 12

Delay - how long ago

Exposure mode - did u see face in diff context

Stimulus variables - how meaningful is the face

Subject variables - how good is your memory