Topic 3: Collection of evidence

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Presentation transcript:

Topic 3: Collection of evidence

Background: Collection and use of evidence from witnesses and suspects How do we collect evidence from witnesses and suspects? Ask them! If someone says they committed the crime, is this a reliable source? What factors may influences someone to say they have committed a crime if they haven’t? Let’s recap: Loftus and Palmer study – what is one conclusion from this? Leading questions influence memories

Here’s an example… https://www.youtube.com/watch?v=LKtNxRL7f_A

How is evidence collected from witnesses? Background: Collection and use of evidence from witnesses and suspects How is evidence collected from witnesses? Read the Reid technique There are several ways in which police can collect information including… Identity parades Identikits The most important technique used is the interview The Standard Interview (SI) The Cognitive Interview (CI) The Enhanced Cognitive Interview (ECI)

Background: Collection and use of evidence from witnesses and suspects Key research: Memon and Higham (1998) A review of the cognitive interview Application: one strategy for police interviews

Key research: Memon and Higham (1998) A review of the cognitive interview Read through the front side of A3 Read model essay answer Complete task 1 Application: Strategies for police interviews Use p150 in textbook for ‘PEACE’ and ‘Forensic hypnosis’ Complete task 2 Complete task 3 Complete task 4

Background: Collection and use of evidence from witnesses and suspects Key research: Memon and Higham (1998) A review of the cognitive interview Application: one strategy for police interviews