CI designed to enhance quantity of correct recall w/o compromising quality, but Köhnken et al (1999) found 81% increase of correct info, but also 61% increase incorrect info (false positives) when enhanced CI used. Means police need to treat all info collected from CIs w/ caution - doesn't guarantee accuracy.
When used in real world, isn't just one 'procedure' - collection of related techniques. Eg, Thames Valley Police use version that doesn't include 'changing perspectives'.
Kebbel + Wagstaff report police officers suggest CI requires more time than available - prefer to use deliberate strategies that aim to limit eyewitness' report to min amount of info officers feel necessary. Also requires special training, many forced not been able to provide more than few hours - why CI not widespread.
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