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8,947

10 Sept 2022

2 pages

How Evidence is Processed in Criminology: Physical and Testimonial Evidence

How evidence is processed in criminologyinvolves handling both physical... Show more

Unit 3-AC1.3: Explain how
evidence is processed
There are two types of evidence: physical and testimonial. Physical evidence is
actual mater

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.

Unit 3-AC1.3: Explain how
evidence is processed
There are two types of evidence: physical and testimonial. Physical evidence is
actual mater

Unit 3 - AC1.3: Explain How Evidence is Processed

This section covers the two main types of evidence in criminology - physical and testimonial - and explains how each is properly processed, stored, and analyzed.

Physical Evidence Processing

Physical evidence includes material items like DNA samples, weapons, or photographs. Its handling is based on Locard's exchange principle that every contact leaves a trace.

Definition: Physical evidence refers to tangible objects or biological samples collected from a crime scene that can be scientifically analyzed.

Key points on processing physical evidence:

  • Blood stains must dry naturally before collection and be analyzed within 28 hours.
  • Semen stains should dry, then be packaged in paper and plastic bags.
  • DNA from blood and semen is checked against databases for matches.
  • Bite marks are photographed and may be cast to compare dental records.

Example: In the Meredith Kercher murder case, physical evidence was mishandled when officers improperly collected DNA samples weeks after the crime.

Testimonial Evidence Processing

Testimonial evidence consists of witness statements, expert testimony, and victim accounts.

Vocabulary: How is testimonial evidence analyzed involves carefully recording statements and determining their admissibility in court.

Key points on processing testimonial evidence:

  • Police record witness statements in notebooks or via audio recording.
  • Recorded statements must be properly sealed, labeled and signed.
  • All testimonial evidence must be disclosed before trial.
  • Witnesses typically testify in person, but may use video in some cases.

Highlight: Improperly obtained testimonial evidence, like that from entrapment, may be deemed inadmissible in court.

Quote: "Every contact leaves a trace" - Edmond Locard's exchange principle that guides physical evidence collection.



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Where can I download the Knowunity app?

You can download the app from Google Play Store and Apple App Store.

Is Knowunity really free of charge?

That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.

Can't find what you're looking for? Explore other subjects.

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4.9/5

App Store

4.8/5

Google Play

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

Best app on earth! no words because it’s too good

Thomas R

iOS user

Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.

Basil

Android user

This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.

Rohan U

Android user

I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.

Xander S

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now

Paul T

iOS user

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

Best app on earth! no words because it’s too good

Thomas R

iOS user

Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.

Basil

Android user

This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.

Rohan U

Android user

I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.

Xander S

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now

Paul T

iOS user

 

Criminology

8,947

10 Sept 2022

2 pages

How Evidence is Processed in Criminology: Physical and Testimonial Evidence

How evidence is processed in criminologyinvolves handling both physical and testimonial evidence carefully. Physical evidence like DNA samples must be properly collected, stored, and analyzed in forensic labs. Testimonial evidence from witnesses requires accurate recording and may be presented... Show more

Unit 3-AC1.3: Explain how
evidence is processed
There are two types of evidence: physical and testimonial. Physical evidence is
actual mater

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

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.

Unit 3-AC1.3: Explain how
evidence is processed
There are two types of evidence: physical and testimonial. Physical evidence is
actual mater

Sign up to see the contentIt's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Unit 3 - AC1.3: Explain How Evidence is Processed

This section covers the two main types of evidence in criminology - physical and testimonial - and explains how each is properly processed, stored, and analyzed.

Physical Evidence Processing

Physical evidence includes material items like DNA samples, weapons, or photographs. Its handling is based on Locard's exchange principle that every contact leaves a trace.

Definition: Physical evidence refers to tangible objects or biological samples collected from a crime scene that can be scientifically analyzed.

Key points on processing physical evidence:

  • Blood stains must dry naturally before collection and be analyzed within 28 hours.
  • Semen stains should dry, then be packaged in paper and plastic bags.
  • DNA from blood and semen is checked against databases for matches.
  • Bite marks are photographed and may be cast to compare dental records.

Example: In the Meredith Kercher murder case, physical evidence was mishandled when officers improperly collected DNA samples weeks after the crime.

Testimonial Evidence Processing

Testimonial evidence consists of witness statements, expert testimony, and victim accounts.

Vocabulary: How is testimonial evidence analyzed involves carefully recording statements and determining their admissibility in court.

Key points on processing testimonial evidence:

  • Police record witness statements in notebooks or via audio recording.
  • Recorded statements must be properly sealed, labeled and signed.
  • All testimonial evidence must be disclosed before trial.
  • Witnesses typically testify in person, but may use video in some cases.

Highlight: Improperly obtained testimonial evidence, like that from entrapment, may be deemed inadmissible in court.

Quote: "Every contact leaves a trace" - Edmond Locard's exchange principle that guides physical evidence collection.

We thought you’d never ask...

What is the Knowunity AI companion?

Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.

Where can I download the Knowunity app?

You can download the app from Google Play Store and Apple App Store.

Is Knowunity really free of charge?

That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.

Can't find what you're looking for? Explore other subjects.

Students love us — and so will you.

4.9/5

App Store

4.8/5

Google Play

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

Best app on earth! no words because it’s too good

Thomas R

iOS user

Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.

Basil

Android user

This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.

Rohan U

Android user

I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.

Xander S

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now

Paul T

iOS user

The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.

Stefan S

iOS user

This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.

Samantha Klich

Android user

Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.

Anna

iOS user

Best app on earth! no words because it’s too good

Thomas R

iOS user

Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.

Basil

Android user

This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.

David K

iOS user

The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!

Sudenaz Ocak

Android user

In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.

Greenlight Bonnie

Android user

very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.

Rohan U

Android user

I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.

Xander S

iOS user

THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮

Elisha

iOS user

This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now

Paul T

iOS user