Continued: How Evidence is Processed in Criminology
This page further explores the processing of physical and testimonial evidence, including examples of improper handling.
Physical Evidence Storage and Analysis
Proper storage and analysis of physical evidence is crucial for maintaining its integrity and admissibility in court.
Definition: How is physical evidence analyzed involves scientific examination in forensic laboratories using specialized techniques to extract useful information.
Key points on physical evidence analysis:
- DNA samples from blood and semen are compared to database records.
- Bite mark impressions can be cast and compared to dental records.
- Improper handling can contaminate or degrade physical evidence.
Example: In the Meredith Kercher case, key DNA evidence was compromised by improper collection techniques, including handling without gloves.
Testimonial Evidence Handling
The proper collection and analysis of testimonial evidence is critical for its use in criminal proceedings.
Vocabulary: How is testimonial evidence transferred to court involves careful documentation and disclosure of witness statements prior to trial.
Key points on testimonial evidence handling:
- Witness statements must be accurately recorded and properly sealed.
- Both prosecution and defense must disclose witness lists before trial.
- Vulnerable witnesses may give testimony via video link.
- Expert testimony must be carefully scrutinized for accuracy.
Highlight: Improperly obtained or analyzed testimonial evidence can lead to wrongful convictions, as in the case of Sally Clark due to flawed expert testimony.
Quote: "There was a one in 73 million chance that there could be two cot deaths within the same family" - Sir Roy Meadow's incorrect expert testimony that led to a false conviction.
