Fisher and Geiselman 1989

Question 1

Aim

Answer 1

to study and test the cognitive interview

Question 2

design

Answer 2

field exp = actual interviews of real witnesses by police detectives

Question 3

Ps;

Answer 3

16 detectives from the robbery division of data florida

All had a min of 5 yrs experiacne

Question 4

procedure

Answer 4

phase 1: detectives asked to record selection of interviews using standard technique.

• This took 4 months and 88 interviews
• divided into 2 groups
• trained for cognitive interviews = 4 60min sessions
• 7 detectives completed + were used
• over the next 7 months interviews were recorded = CI
• Post interviews = analysed by uni of california who were blind to this condition

Question 5

Results:

Answer 5

7 trained detectives elicited 47% more info after training and 63% more than the untrained

• In terms of accuracy = lab research found no. of diff between CI and standard
• 85% of all statements being correct in all conditions
• time taken to interview = CI was longer // but not significant longer

Question 6

conclusions:

Answer 6

strong support for CI effectiveness
= more info was obtained to real events

the CI has been applied to other clinical settings - therapist using it