OCR A-Level Psychology H567
Research Methods and Techniques
Planning and Conducting Research
Data Recording, Analysis and Presentation
Report Writing and Scientific Communication
Practical Activities and the Nature of Science
Mathematical Requirements for Research Methods
Studying and Evaluating the Core Studies: The Common Framework
Core Studies: Social Area
Core Studies: Cognitive Area
Core Studies: Developmental Area
Core Studies: Biological Area
Core Studies: Individual Differences Area
Areas and Perspectives in Psychology
Debates in Psychology
Practical Applications of Psychology
Issues in Mental Health
Child PsychologyApplied option
Criminal PsychologyApplied option
Environmental PsychologyApplied option
Sport and Exercise PsychologyApplied option
Methodological Issues and Debates Running Through Applied Psychology
Criminal Psychology
Strategies for reducing bias in collecting and processing forensic evidence
- 3 things to know
- Component 03
Overview
Recall questions on strategies for reducing bias in forensic evidence, including sequential unmasking, case managers, blind verification, evidence line-ups, removing case information, bias training, contamination controls, applying them to scenarios, and testing whether they work.
What you need to know
Answer each one before you reveal it.
Name one strategy for reducing bias in the processing of forensic evidence.
Explain how sequential unmasking works in a fingerprint comparison.
Questions from this subtopic
Each one with the model answer underneath.
- 1
Name one strategy for reducing bias in the processing of forensic evidence.
Model answer
Linear sequential unmasking, in which case information is released to the examiner only in a controlled order.
- 2
Explain how sequential unmasking works in a fingerprint comparison.
Model answer
The examiner analyses and records the features of the crime scene mark in full before being shown the suspect's print, so expectation cannot shape what is seen in the mark.
- 3
What is the role of a case manager in a context management system?
Model answer
The case manager receives all the case information and passes on to the examiner only what is needed to do the comparison, withholding details such as a confession or previous convictions.
- 4
What is blind verification?
Model answer
A second examiner repeats the comparison without knowing either the first examiner's conclusion or the surrounding case details.
- 5
Why is ordinary verification a weaker safeguard than blind verification?
Model answer
Because a verifier who already knows the first examiner's conclusion tends to look for reasons to agree, so the check simply repeats the original error.
- 6
How does an evidence line-up reduce bias?
Model answer
The genuine suspect's print is presented among several similar prints from people known to be innocent, so the examiner cannot simply confirm the one print they were expecting to match.
Other ways to work this
The same content, four other ways.
What is inside Levo
Six ways to work the same material.
Every question in Criminal Psychology, on a schedule.
Attempt a question from memory, write the correct version, then attempt it again. Levo records the jump between your first attempt and your last, and brings each question back on the day you are due to forget it.
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