Fisher et al

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Aim
To test the cognitive interview in the field.
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Methodology
Field experiment.
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Participants
16 detectives from the Robbery division in Dade County, Florida. Each had a minimum experience of 5 years in the division.
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Procedure part 1
All participants recorded a selection of interviews for 4 months using the standard interview technique. 88 interviews recorded.
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Procedure part 2
7 detectives then trained in the CI and the two groups then recorded interviews for another 7 months. The interviews from both groups were collated and analysed by a team at the uni of Cali.
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Findings
47% more than they did pre-training. They also recorded 63% more compared to the non-CI trained detectives.
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Conclusions.
The CI elicits significantly more information than the cognitive interview, with no loss of accuracy. It takes a little longer, but is more effective and easy to provide.
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Card 2

Front

Field experiment.

Back

Methodology

Card 3

Front

16 detectives from the Robbery division in Dade County, Florida. Each had a minimum experience of 5 years in the division.

Back

Preview of the back of card 3

Card 4

Front

All participants recorded a selection of interviews for 4 months using the standard interview technique. 88 interviews recorded.

Back

Preview of the back of card 4

Card 5

Front

7 detectives then trained in the CI and the two groups then recorded interviews for another 7 months. The interviews from both groups were collated and analysed by a team at the uni of Cali.

Back

Preview of the back of card 5
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