Lesson 6.2.1

6.2.1 Eyewitness research methods, sampling and ethics Quiz: Pearson Edexcel Psychology, Unit 6

20 questions

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Lesson 6.2.1, Eyewitness research methods, sampling and ethics: 20 multiple choice questions for the Pearson Edexcel Psychology (9PS0), Unit 6: Criminological psychology, written with Revision Ninja.

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The 20 questions

  1. Which sampling method recruits easily accessible psychology students for an eyewitness memory study?

    • Random sampling
    • Systematic sampling
    • Stratified sampling
    • Opportunity sampling

  2. Where does a field experiment take place when studying eyewitnesses?

    • Controlled booth
    • Natural setting
    • Psychology lab
    • Online survey

  3. Which sampling technique ensures every member of the target eyewitness population has an equal chance?

    • Random sampling
    • Self-selected sampling
    • Opportunity sampling
    • Volunteer sampling

  4. Which ethical guideline is breached when participants view a violent simulated crime without prior warning?

    • Right to withdraw
    • Informed consent
    • Protection from harm
    • Confidentiality

  5. What is a key advantage of using field experiments in eyewitness research?

    • Total variable control
    • High replicability
    • High ecological validity
    • High internal validity

  6. Which ethical issue commonly arises when bystanders are unwittingly involved in eyewitness field experiments?

    • Right to withdraw
    • Psychological harm
    • Lack of confidentiality
    • Lack of consent

  7. What best defines a case study in eyewitness research?

    • Large-scale meta-analysis
    • Random sample survey
    • Controlled experiment
    • In-depth investigation

  8. A researcher studies one witness's memory of a crime in great depth over several months. Which method is this?

    • A cross-sectional survey
    • A randomised controlled trial
    • A case study
    • A meta-analysis

  9. What is the primary limitation of studying a single eyewitness case?

    • Demand characteristics
    • Standardised procedure
    • High ecological validity
    • Low generalisability

  10. A researcher randomly assigns witnesses to one of two question conditions. Which experimental design is this?

    • Natural experiment
    • Matched pairs
    • Independent groups
    • Repeated measures

  11. Which method best examines how police line-ups affect real identifications?

    • Field study
    • Self-selected survey
    • Animal experiment
    • Double-blind trial

  12. What is the primary advantage of using a field experiment to test weapon focus?

    • Easy replication
    • High internal validity
    • High ecological validity
    • Standardised procedure

  13. Which research method is best suited to explore a witness's detailed trauma experience?

    • Case study
    • Closed questionnaire
    • Correlational analysis
    • Controlled observation

  14. What ensures participants fully understand the nature of an eyewitness study before agreeing to take part?

    • Informed consent
    • Presumive consent
    • Debriefing
    • Right to withdraw

  15. What is a key advantage of using case studies in eyewitness research?

    • High population validity
    • Easy generalisability
    • Numerical data only
    • Rich qualitative data

  16. What is the independent variable in an experiment on eyewitness testimony?

    • An uncontrolled factor
    • The sample size
    • The measured outcome
    • The manipulated variable

  17. What is the dependent variable in an experiment testing eyewitness memory?

    • The measured outcome
    • The participant allocation
    • The manipulated factor
    • The constant condition

  18. A study measures recall accuracy after leading questions. What is the dependent variable?

    • Type of question
    • Participant age
    • Recall accuracy
    • Time of day

  19. Which procedure best improves the internal validity of an eyewitness experiment?

    • Qualitative interviews
    • Opportunity sampling
    • Naturalistic setting
    • Standardised instructions

  20. Why use an independent groups design in an eyewitness experiment?

    • Reduce participant numbers
    • Increase demand characteristics
    • Eliminate individual differences
    • Avoid order effects

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