Fisher - Field Test Of The Cognitive Interview Flashcards
What method did Fisher use?
Field experiment with actual interviews of real witnesses
What was the aim of Fishers study?
To compare the performance in the field of experienced detectives pre and post training in cognitive interviewing techniques
What was the sample in the Fisher study?
16 experienced detectives with a robbery division in Florida
How many completed the cognitive interviewing course?
7
Outline the first phase of the experiment
All 16 detectives tape recorded several of their interviews using their usual interview techniques over a period of 4 months
Outline the second phase of the experiment
The 16 detectives were divided into their two groups who recorded between 2-7 interviews over a period of 7 months
How were the recordings analysed?
They were transcribed and scored by a team of independent judges from the University of California. The number of relevant, factual and objective statements was recorded
What were the differences between pre and post training?
47% more information was recorded
What were the differences between the trained group and the control group?
63% more information was recorded in interviews conducted by the trained detectives
How was the accuracy of the eye witness statements established?
Through corroboration with another source
Name two conclusions of Fishers study?
The cognitive interviewing technique is much more effective than traditional methods and the training is relatively easy to provide
