Improving Accuracy of EWT - Cognitive Interview

• :) RTS Kohnken

  > meta-analysis of 50 studies comparing cognitive and standard interviews - cognitive had an increase of 41% in correct information compared to standard

  > supports that the cognitive interview is an effective technique - helps witnesses recall information
• :( RTC Kohnken

  > more incorrect items are also recalled - 61% increase of incorrect information reported in a cognitive interview compared to standard (false positives)

  > could lead to false imprisonments and wasting police time

  > reduces the effectiveness of the cognitive interview

  > discussion - economic implications
• :( not all techniques are equally effective

  > Milne and Bull - each of the four techniques, used alone, produced more information that a standard interview, but a combination of recall everything and context reinstatement produced better recall than any of the other elements

  > only certain aspects of cognitive interview are useful in producing accurate recall

  > limits the effectiveness of the cognitive interview