Mann et al - Detecting lies

Aim:

·         Man et al conducted a study on police officers ability to detect suspects lies, aiming to see whether they'd be able to do so or not during interviews.

Background:

·         Previous research has shown that accuracy rates are very low, and that there is a 'truth bias', whereby ordinary people are more likely to guess that someone is being truthful than lying if they are unsure.

Participants:

·         99 ordinary police officers from kent in the UK. 24 females, 75 males, average time in the service 11 years.

Procedure:

·         Field experiment.

·         Participants approached, asked if they'd take part in a study about police officers ability to detect deception - told their participation was anonymous.

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