Eyewitness Testimony and Memory Biases

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Questions and Answers

What is one of the significant risks associated with eyewitness testimony?

  • Memories can be influenced by various factors after an event. (correct)
  • Eyewitness testimony is always reliable in legal contexts.
  • Eyewitnesses can perfectly recall all details.
  • Eyewitnesses may intentionally lie under oath.

Which phase is crucial in the process of eyewitness testimony?

  • The final courtroom interrogation by a lawyer.
  • The interactions and interviews following the event. (correct)
  • The memory of the event before entering the courtroom.
  • The moment-specific experience of the crime alone.

How can eyewitness errors impede justice?

  • By providing exact accounts of events.
  • By ensuring all testimonies are recorded accurately.
  • By reinforcing community trust in police.
  • By leading to wrongful convictions based on inaccurate memories. (correct)

What type of errors can occur in human memory according to the content?

<p>Individuals can create entire false memories of events. (B)</p> Signup and view all the answers

What factor contributes to the compelling nature of eyewitness testimony?

<p>People are resistant to questioning its validity. (C)</p> Signup and view all the answers

What part of the eyewitness testimony process can influence memory the most post-event?

<p>Public discussions about the event. (B)</p> Signup and view all the answers

What is a common misconception about eyewitness capabilities?

<p>Eyewitnesses can never be mistaken. (A)</p> Signup and view all the answers

What does the complexity of eyewitness testimony highlight about human memory?

<p>Human memory is prone to biases and inaccuracies. (A)</p> Signup and view all the answers

What is the primary concern regarding eyewitness testimony in court?

<p>Its accuracy can be questionable. (A)</p> Signup and view all the answers

What percentage of DNA exoneration cases have been attributed to faulty eyewitness testimony?

<p>75% (B)</p> Signup and view all the answers

What phenomenon describes the contamination of a witness's memory by misleading information after witnessing an event?

<p>Misinformation effect (B)</p> Signup and view all the answers

In the study involving a red car and a yield sign, what was the misleading question asked to the subjects?

<p>How fast was the car traveling when it passed the yield sign? (B)</p> Signup and view all the answers

Which group has been found to be most susceptible to misinformation effects?

<p>Children and older adults (D)</p> Signup and view all the answers

What factor can increase the likelihood of misinformation effects in witnesses?

<p>Discussions with other witnesses (A)</p> Signup and view all the answers

What was the outcome for Ronald Cotton after being wrongly identified as a rapist?

<p>He was exonerated after 10 years. (C)</p> Signup and view all the answers

What has psychological science suggested might help reduce eyewitness errors?

<p>Use clearer questioning techniques (C)</p> Signup and view all the answers

How did subjects' accuracy change when they had discussed details with co-witnesses?

<p>Their accuracy was highly dependent on previous discussion. (A)</p> Signup and view all the answers

What percentage accuracy was observed when subjects discussed items with co-witnesses?

<p>34% (D)</p> Signup and view all the answers

What aspect can lead to different memories being recalled among co-witnesses?

<p>Different perspectives of the same event (A)</p> Signup and view all the answers

Which of the following was demonstrated in the study where subjects wore different polarized glasses?

<p>Witnesses can see the same event differently. (D)</p> Signup and view all the answers

What is typically used in most jurisdictions for conducting lineups?

<p>Photo spreads of individuals (C)</p> Signup and view all the answers

Which of the following factors is NOT likely to influence eyewitness identification errors?

<p>Witness age (C)</p> Signup and view all the answers

What type of memory can be particularly vulnerable to contamination?

<p>Eyewitness memory (B)</p> Signup and view all the answers

What is a primary challenge regarding memory errors after they occur?

<p>They can be very hard to unmake. (D)</p> Signup and view all the answers

What common practice among witnesses can contribute to inaccurate recall of events?

<p>Discussing the event with other witnesses (A)</p> Signup and view all the answers

What is the term for the phenomenon when a person cannot recall a name that is 'on the tip of their tongue'?

<p>Tip-of-the-tongue effect (B)</p> Signup and view all the answers

What is one important recommendation for conducting fair lineups?

<p>Using a diverse set of individuals for foils (D)</p> Signup and view all the answers

Which of the following describes a 'target absent lineup'?

<p>The lineup contains known innocent individuals only. (A)</p> Signup and view all the answers

Which of the following is a technique suggested to improve lineup accuracy?

<p>Sequential presentation of lineup members (C)</p> Signup and view all the answers

What can be a potential consequence of memory biases in eyewitness testimonies?

<p>Incorrect recollection of events (D)</p> Signup and view all the answers

What is one of the primary reasons why eyewitnesses may struggle with identifying perpetrators from different races?

<p>Cross-race effect (B)</p> Signup and view all the answers

What type of memories are particularly susceptible to errors due to people's expectations and beliefs?

<p>Schematic memories (B)</p> Signup and view all the answers

How can investigators enhance the quality of lineups?

<p>Ensuring similarities among lineup members (D)</p> Signup and view all the answers

What is an observable effect of poor viewing conditions during the crime?

<p>Higher likelihood of mistaken identifications (D)</p> Signup and view all the answers

What is the purpose of expert witness testimony provided to jury members in relation to eyewitness memory?

<p>To inform jurors about the limitations and errors associated with eyewitness testimony (D)</p> Signup and view all the answers

Which recommendation pertains specifically to the legal procedures involving eyewitnesses?

<p>Properly constructing and conducting lineups (A)</p> Signup and view all the answers

What is meant by the term 'misinformation effect'?

<p>A memory error caused by exposure to incorrect information after an event (B)</p> Signup and view all the answers

In what way does the concept of 'false memories' relate to eyewitness testimony?

<p>They can lead to jurors confidently affirming incorrect identifications (B)</p> Signup and view all the answers

What is a potential issue with the use of 'show-ups' in eyewitness identification?

<p>They place undue pressure on the eyewitness to make a quick decision (B)</p> Signup and view all the answers

Which of the following best describes the term 'schema' in memory psychology?

<p>A structured memory system based on repetitive exposure (B)</p> Signup and view all the answers

How does the legal system often overvalue eyewitness testimony?

<p>By placing too much emphasis on witness confidence rather than accuracy (D)</p> Signup and view all the answers

What role do 'foils' play in an eyewitness lineup?

<p>They are individuals included to support identification accuracy (A)</p> Signup and view all the answers

What are schemata in relation to memory systems?

<p>Memory templates that help organize information. (A)</p> Signup and view all the answers

What is a primary reason why individuals tend to remember schema-consistent information?

<p>Their memory systems are designed to exploit redundancies. (C)</p> Signup and view all the answers

What type of memory errors are categorized as false memories?

<p>Inaccurate recollections of events that never happened. (D)</p> Signup and view all the answers

How can false memories be induced during therapy sessions?

<p>By suggesting misleading information or events. (B)</p> Signup and view all the answers

In Loftus and Pickrell's study, what was the false event introduced to the subjects?

<p>Being lost in a shopping mall. (B)</p> Signup and view all the answers

What effect can false memories have on a person’s behavior?

<p>They can create aversions to certain foods or activities. (A)</p> Signup and view all the answers

What is one major issue with eyewitness testimony in the legal system?

<p>It can be influenced by leading questions. (C)</p> Signup and view all the answers

How can leading questions impact eyewitness memory?

<p>They can distort the original memory. (A)</p> Signup and view all the answers

What methodology was used to introduce the false memory of Bugs Bunny meeting at Disneyland?

<p>Participants were asked to review fake advertisements. (B)</p> Signup and view all the answers

Why is it difficult to distinguish false memories from true memories after implantation?

<p>They are encoded in the brain alongside real memories. (D)</p> Signup and view all the answers

What technique was used to create false memories regarding unpleasant experiences with food?

<p>A computerized analysis of questionnaire answers. (A)</p> Signup and view all the answers

What can result from discussing past events with co-witnesses?

<p>The likelihood of memory distortion increases. (A)</p> Signup and view all the answers

Which of the following is a consequence of the development of false memories?

<p>Potential for wrongful accusations and convictions. (B)</p> Signup and view all the answers

Flashcards

Eyewitness Testimony

A person who witnessed a crime, accident, or event giving a detailed account in court.

Memory Biases

Errors and distortions during the memory process that are not based on the actual event itself.

Memory Errors

Mistakes in recalling specific details of an event during testimony. Sometimes it involves remembering events that never occurred.

Legal Testimony

Statements made in court in the context of legal proceedings.

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Eyewitness Identification

The process of identifying a suspect by an eyewitness in a line-up or other scenario during a trial.

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Misinformation

Incorrect information introduced after an event that can impact memory reconstructions.

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Psychological Research

The study of human mind and behavior, in particular concerning eyewitness testimony.

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Compelling Testimony

Eyewitness testimony that is very convincing due to the human tendency to trust personal accounts.

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Eyewitness Testimony Accuracy

Eyewitness accounts are often persuasive in court but can be inaccurate.

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Misinformation Effect

Errors in memory caused by information encountered after an event.

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Leading Question

A question worded to suggest a particular answer.

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Wrongful Convictions

Sentencing individuals for crimes they did not commit.

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DNA Exoneration

Freedom from charges because of DNA evidence.

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Ronald Cotton Case

Example of wrongful conviction based on mistaken eyewitness testimony

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Witness Contamination

Witnesses' memories influence each other in a negative way

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Co-witness Memory

The impact of talking to each other on memories of an event.

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Misinformation in Studies

Introducing incorrect details to affect reported memories.

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Susceptibility to Misinformation

Different ages and conditions affect the susceptibility of an individual.

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Different Witness Perspectives

Different people may notice and remember different details even of the same event.

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Laboratory Modeling

Using a controlled environment to test the effects on memory

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Memory Contamination

External information corrupting a person's memory of an event.

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Misinformation in Questions

Questions worded in a way that suggests a particular answer.

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Innocence Project

Website that investigates wrongful convictions and is a resource for DNA exonerations.

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Witness Co-Corruption

When witnesses discuss an event, their memories can become contaminated, leading to inaccurate details.

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Photo Spread

A set of photographs used in eyewitness identification, containing the suspect and innocent 'fillers'.

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Target Present Lineup

A lineup where the actual perpetrator is included among the suspects.

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Target Absent Lineup

A lineup where the actual perpetrator is NOT included.

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Witness Selection Error

When a witness incorrectly identifies a suspect from a target present lineup, or picks a filler from a target absent lineup.

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Factors Affecting Identification

Conditions like poor lighting, stress, limited viewing time, or delay in identification can impact a witness's accuracy.

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Cross-Race Effect

Witnesses often struggle to identify people of a different race from their own.

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Fair Lineup

A lineup where the suspect and fillers look similar and don't stand out, avoiding bias.

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Double-Blind Lineup

A lineup procedure where neither the witness nor the officer conducting the lineup knows who the suspect is.

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Sequential Lineup

A lineup where suspects are presented one at a time, rather than all together, reducing comparison bias.

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Memory Schemas

Mental frameworks or representations of common events or situations, influencing our memories.

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Tip-of-the-Tongue Effect

The feeling of knowing a word or name but being unable to recall it.

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Schema

A mental framework or template that helps us organize and make sense of information based on prior experiences and knowledge.

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False Memories

Memories of events that never actually happened, often implanted through suggestion or manipulation.

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Schema-consistent Information

Information that aligns with our existing expectations and mental frameworks, making it easier to remember.

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False Memory

A memory for an event that never actually happened.

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Why are false memories a problem?

False memories can lead to inaccurate accounts, wrongful convictions, and even harm to individuals involved.

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Foils

People included in a lineup (photo or live) who are not the suspect, used to test if a witness identifies the right person.

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How are false memories created?

False memories can be implanted through suggestive questioning, repeated suggestion, or exposure to false information.

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What are some common false memories?

Common false memories include being lost in a shopping mall, nearly drowning, or witnessing a violent event.

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Mock Witnesses

People participating in research studies who pretend to be witnesses, allowing researchers to study memory.

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What is the 'Lost in the Mall' experiment?

A pioneering study demonstrating the creation of false memories by suggesting a childhood experience.

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Lineup

A process where a witness is shown a group of people, including the suspect, to see if they can identify the perpetrator.

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How reliable is eyewitness testimony?

Eyewitness testimony is often considered reliable, but research suggests that it can be highly inaccurate due to memory errors and biases.

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What factors can influence eyewitness memory?

Factors influencing eyewitness memory include leading questions, pre-existing biases, and conversations with other witnesses.

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Expert Witness

A professional with specialized knowledge in a field, who provides testimony in legal cases.

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How can we make eyewitness testimony more reliable?

Improving police procedures, using proper questioning techniques, and emphasizing witness confidence can enhance the reliability of eyewitness testimony.

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What are some problems with memory in the legal system?

Memory errors and biases can lead to wrongful convictions and miscarriages of justice.

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False Feedback Manipulation

A method for implanting false memories by presenting subjects with fabricated computer-generated analysis of their past experiences.

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Memory Spillage

The impact of false memories on subsequent behavior and attitudes.

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Why is it hard to differentiate false memories from true memories?

False memories can be deeply ingrained and feel just as real as true memories, making it difficult to distinguish between them.

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Study Notes

Eyewitness Testimony and Memory Biases

  • Eyewitness testimony, while compelling, is susceptible to errors and biases, impacting legal cases
  • Memory can misremember specific details and even nonexistent events.

What is Eyewitness Testimony?

  • Eyewitness testimony involves a witness recalling a crime (or accident) in court.
  • It involves various steps, from witnessing to courtroom testimony. (Police interviews, descriptions to others, identifications)

Importance of Eyewitness Testimony Research

  • Eyewitness testimony is very persuasive to juries but often inaccurate.
  • Mistaken eyewitness testimony is a significant factor in wrongful convictions, especially in a significant portion of DNA exoneration cases.

Misinformation

  • Misinformation can corrupt memory between the event and recalling it. This is called the misinformation effect.
  • Leading questions, like "How fast was the car traveling when it passed the yield sign?", contaminate memory. Even subtle wording changes can impact memory.
  • Social interactions (co-witnesses) further corrupt memory through shared and influenced recall.
  • Different perspectives influence what is remembered.

Identifying Perpetrators

  • Eyewitnesses identify perpetrators from photo spreads (mugshots) or line-ups.
  • Lineups can contain mistakes. Identification errors occur due to poor conditions, viewing time, delay, and race bias.
  • Effective lineups have carefully selected foils/innocent people, and double-blind procedures.

Kinds of Memory Biases

  • Memory is fallible. People often misremember or forget events (example: misplacing keys).
  • "Tip-of-the-tongue" describes the feeling of knowing a word but not being able to recall it.
  • Schemas (templates) are used for efficiency, but can result in generic memories.

False Memories

  • False memories can be inadvertently induced.
  • Therapy sessions are one example, where a patient is coached into remembering an event that didn't happen.
  • False memories can be created in research, such as the mall incident and other scenarios.
  • Subsequent memories can modify existing memories, with new information. Subsequent studies use various methods to produce false memories
  • Distinguishing them from genuine memories can be challenging.

Conclusion

  • Eyewitness testimony is persuasive despite potential inaccuracies.
  • Improvement of procedures can reduce errors in lineups, witness questioning, and jury education.

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