What is the background of the cognitive interview?
It was designed to be used in police investigations. Standard police interviews might result in important information being left out of a witness statement. The aim is to elicit as much information as possible using memory retrival techniques.
Showed 89 students police training videos and were interviewed 48 hours later. PPS who were intervieved by cognitive interviews gave significantly more detail and accuracy than standard interviews.
He developed a version of cognitive interviews for children. He used it in a lab study where children were shown a video of a birthday party and then questionned about it.