Ever wondered how courts decide if someone's guilty or innocent,... Show more
Criminology Unit 3 - AC 3.1 Study Guidance






Evidence Quality and the Barry George Case
Valid evidence needs to be reliable, credible, and admissible in court. Both prosecution and defence teams present their cases, but sometimes the evidence just isn't strong enough - leading to wrongful convictions that get overturned years later.
Barry George's case is a perfect example of how circumstantial evidence can go wrong. In 2001, he was convicted of murdering TV presenter Jill Dando, but the conviction was quashed in 2008. The main problems? His bizarre past behaviour (including dressing as Gary Glitter in court) likely created bias against him, even though it had nothing to do with the murder.
The case relied heavily on eyewitness testimony, which sounds reliable but actually isn't. Memory fades over time, making these accounts less accurate - especially when witnesses are recalling events from months or years ago. There was also a serious lack of forensic evidence linking George to the crime scene.
Key Point: Even gunshot residue found on George was explained by armed officers being present during his arrest, contradicting the prosecution's claims.

The West Memphis Three: When Bias Trumps Evidence
The 1994 case of the West Memphis Three shows how public prejudice can completely derail justice. Damien Echols, Jason Baldwin, and Jessie Misskelley were convicted of murdering three young boys, largely because people believed they were involved in Satanic rituals.
Here's the problem: there was virtually no physical evidence connecting them to the crime. The prosecution relied on the supposed 'satanic' connection and a confession from Jessie Misskelley - who had a low IQ and later said police coerced him during a lengthy interrogation.
DNA evidence that emerged years later didn't match any of the accused, proving their innocence. This highlights how bias based on lifestyle choices (like listening to heavy metal music) can cloud judgement when there's no solid scientific evidence.
Remember: The defendants used an 'Alford plea' in 2011, allowing them to maintain innocence whilst acknowledging the prosecution had some evidence - they were finally released after 17 years.

Invalid Expert Evidence: The Sally Clark Tragedy
Sometimes the biggest problem isn't missing evidence - it's expert testimony that's completely wrong. Sally Clark was wrongfully convicted of murdering her two babies based on paediatrician Sir Roy Meadows' statistical evidence.
Meadows claimed the chances of two children from middle-class families dying from Sudden Infant Death Syndrome (SIDS) was 1 in 73 million. What he didn't mention was the crucial genetic factor - SIDS can run in families, making multiple deaths much more likely than his statistics suggested.
The jury trusted Meadows because of his impressive qualifications, but he wasn't actually qualified to make those statistical calculations. This shows how expert credibility can be misleading if the expert steps outside their area of expertise.
The Hillsborough Disaster Investigation
The 1989 Hillsborough Disaster demonstrates how official investigations can reveal the truth when conducted properly. The Taylor Inquiry (1990) investigated shortly after the event, maintaining high currency and accuracy in its findings.
The inquiry found South Yorkshire Police failed to manage the crowd properly, leading to 96 deaths. However, media bias complicated things - The Sun newspaper falsely claimed Liverpool fans were pickpocketing the dead and urinating on police, showing how political bias can distort reporting.
Critical Insight: The Sun's false reporting was likely influenced by political bias against Liverpool during Margaret Thatcher's era, showing how external factors can corrupt media coverage.

Media Reports: Sensationalism vs Truth
Media outlets should remain objective, but they're often more interested in sensationalism than accuracy. Broadsheet newspapers and television generally offer more reliable reporting than tabloids, but all media can be influenced by political leanings.
The Christopher Jeffreys case perfectly illustrates media damage. Multiple newspapers portrayed him negatively with false claims about his character and sexuality, creating public bias that potentially influenced the jury - even though he was completely innocent of Joanna Yeates's murder.
Political bias shapes reporting significantly. Right-wing papers like the Daily Mail and left-wing papers like the Mirror will present the same story differently, affecting public opinion and potentially jury decisions.
Law Reports: The Gold Standard
Law reports are published weekly and provide factual, unbiased accounts of court proceedings. These maintain consistency across the UK - similar cases receive similar sentences regardless of location, ensuring fairness.
Unlike media reports, law reports contain no bias or opinion - they're purely objective records of legal proceedings. They maintain excellent currency and accuracy (exact transcripts of key case details).
Why This Matters: Law reports help ensure consistent sentencing across different courts and provide reliable precedents for future cases.

Trial Transcripts: Technology in the Courtroom
Trial transcripts are direct records of everything said during Crown Court hearings (not used in magistrates' courts). Modern courts use DARTS (Digital Audio Recording Transcriptions and Storage) systems that automatically convert speech to text.
These transcripts are particularly useful for appeals and parole decisions. They maintain high currency since they record conversations in real-time, and they contain no bias since they're created by technology rather than human interpretation.
However, accuracy can be problematic. Technical issues include difficulty recognising accents, speech impediments, or softly spoken voices. The system can struggle when multiple people speak simultaneously or may misinterpret what's being said.
Potential problems with DARTS include hacking risks, dialect recognition issues, and the challenge of identifying who said what when voices overlap. Despite these limitations, digital transcription is generally more reliable than human court reporters.
Tech Reality Check: While DARTS systems are impressive, they're not perfect - technical malfunctions and speech recognition errors can affect accuracy in crucial legal proceedings.
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Criminology Unit 3 - AC 3.1 Study Guidance
Ever wondered how courts decide if someone's guilty or innocent, and what happens when they get it wrong? Understanding evidence quality and different types of legal documentation is crucial for grasping how our justice system works - and sometimes fails.

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Evidence Quality and the Barry George Case
Valid evidence needs to be reliable, credible, and admissible in court. Both prosecution and defence teams present their cases, but sometimes the evidence just isn't strong enough - leading to wrongful convictions that get overturned years later.
Barry George's case is a perfect example of how circumstantial evidence can go wrong. In 2001, he was convicted of murdering TV presenter Jill Dando, but the conviction was quashed in 2008. The main problems? His bizarre past behaviour (including dressing as Gary Glitter in court) likely created bias against him, even though it had nothing to do with the murder.
The case relied heavily on eyewitness testimony, which sounds reliable but actually isn't. Memory fades over time, making these accounts less accurate - especially when witnesses are recalling events from months or years ago. There was also a serious lack of forensic evidence linking George to the crime scene.
Key Point: Even gunshot residue found on George was explained by armed officers being present during his arrest, contradicting the prosecution's claims.

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- Improve your grades
- Join milions of students
The West Memphis Three: When Bias Trumps Evidence
The 1994 case of the West Memphis Three shows how public prejudice can completely derail justice. Damien Echols, Jason Baldwin, and Jessie Misskelley were convicted of murdering three young boys, largely because people believed they were involved in Satanic rituals.
Here's the problem: there was virtually no physical evidence connecting them to the crime. The prosecution relied on the supposed 'satanic' connection and a confession from Jessie Misskelley - who had a low IQ and later said police coerced him during a lengthy interrogation.
DNA evidence that emerged years later didn't match any of the accused, proving their innocence. This highlights how bias based on lifestyle choices (like listening to heavy metal music) can cloud judgement when there's no solid scientific evidence.
Remember: The defendants used an 'Alford plea' in 2011, allowing them to maintain innocence whilst acknowledging the prosecution had some evidence - they were finally released after 17 years.

Sign up to see the content. It's free!
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Invalid Expert Evidence: The Sally Clark Tragedy
Sometimes the biggest problem isn't missing evidence - it's expert testimony that's completely wrong. Sally Clark was wrongfully convicted of murdering her two babies based on paediatrician Sir Roy Meadows' statistical evidence.
Meadows claimed the chances of two children from middle-class families dying from Sudden Infant Death Syndrome (SIDS) was 1 in 73 million. What he didn't mention was the crucial genetic factor - SIDS can run in families, making multiple deaths much more likely than his statistics suggested.
The jury trusted Meadows because of his impressive qualifications, but he wasn't actually qualified to make those statistical calculations. This shows how expert credibility can be misleading if the expert steps outside their area of expertise.
The Hillsborough Disaster Investigation
The 1989 Hillsborough Disaster demonstrates how official investigations can reveal the truth when conducted properly. The Taylor Inquiry (1990) investigated shortly after the event, maintaining high currency and accuracy in its findings.
The inquiry found South Yorkshire Police failed to manage the crowd properly, leading to 96 deaths. However, media bias complicated things - The Sun newspaper falsely claimed Liverpool fans were pickpocketing the dead and urinating on police, showing how political bias can distort reporting.
Critical Insight: The Sun's false reporting was likely influenced by political bias against Liverpool during Margaret Thatcher's era, showing how external factors can corrupt media coverage.

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- Access to all documents
- Improve your grades
- Join milions of students
Media Reports: Sensationalism vs Truth
Media outlets should remain objective, but they're often more interested in sensationalism than accuracy. Broadsheet newspapers and television generally offer more reliable reporting than tabloids, but all media can be influenced by political leanings.
The Christopher Jeffreys case perfectly illustrates media damage. Multiple newspapers portrayed him negatively with false claims about his character and sexuality, creating public bias that potentially influenced the jury - even though he was completely innocent of Joanna Yeates's murder.
Political bias shapes reporting significantly. Right-wing papers like the Daily Mail and left-wing papers like the Mirror will present the same story differently, affecting public opinion and potentially jury decisions.
Law Reports: The Gold Standard
Law reports are published weekly and provide factual, unbiased accounts of court proceedings. These maintain consistency across the UK - similar cases receive similar sentences regardless of location, ensuring fairness.
Unlike media reports, law reports contain no bias or opinion - they're purely objective records of legal proceedings. They maintain excellent currency and accuracy (exact transcripts of key case details).
Why This Matters: Law reports help ensure consistent sentencing across different courts and provide reliable precedents for future cases.

Sign up to see the content. It's free!
- Access to all documents
- Improve your grades
- Join milions of students
Trial Transcripts: Technology in the Courtroom
Trial transcripts are direct records of everything said during Crown Court hearings (not used in magistrates' courts). Modern courts use DARTS (Digital Audio Recording Transcriptions and Storage) systems that automatically convert speech to text.
These transcripts are particularly useful for appeals and parole decisions. They maintain high currency since they record conversations in real-time, and they contain no bias since they're created by technology rather than human interpretation.
However, accuracy can be problematic. Technical issues include difficulty recognising accents, speech impediments, or softly spoken voices. The system can struggle when multiple people speak simultaneously or may misinterpret what's being said.
Potential problems with DARTS include hacking risks, dialect recognition issues, and the challenge of identifying who said what when voices overlap. Despite these limitations, digital transcription is generally more reliable than human court reporters.
Tech Reality Check: While DARTS systems are impressive, they're not perfect - technical malfunctions and speech recognition errors can affect accuracy in crucial legal proceedings.
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.
Most popular content in Criminology
9Most popular content
9Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
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.
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.
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.