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
Research Methods and Techniques
Evaluating experiments: validity, control and realism
- 3 things to know
- Component 01
Overview
Recall questions on internal and ecological validity, mundane realism, identifying field experiments, replication, demand characteristics, ethical problems particular to field experiments, and why tighter control can reduce the usefulness of experimental findings.
What you need to know
Answer each one before you reveal it.
Explain why increasing control in an experiment can reduce the usefulness of its findings.
What does it mean to say a study has high internal validity?
Questions from this subtopic
Each one with the model answer underneath.
- 1
What does it mean to say a study has high internal validity?
Model answer
Any change observed in the dependent variable is genuinely caused by the manipulated independent variable rather than by extraneous variables.
- 2
What is meant by ecological validity?
Model answer
The extent to which the findings of a study can be applied to real-life settings and everyday behaviour.
- 3
What is mundane realism, and why do laboratory tasks often lack it?
Model answer
It is the degree to which the task resembles activities carried out in everyday life, and laboratory tasks are often contrived so that they can be tightly controlled.
- 4
One team studies driver behaviour at a real road junction and another in a driving simulator. Which is the field experiment, and why?
Model answer
The junction study, because the independent variable is manipulated in the drivers' own everyday environment rather than in a contrived setting.
- 5
Why is replication easier in a laboratory experiment than in a quasi experiment?
Model answer
Laboratory procedures are standardised and can be repeated exactly, whereas the naturally occurring groups and conditions of a quasi experiment may never recur in the same form.
- 6
A researcher tests word list recall in a soundproof cubicle. Suggest one reason participants might not behave as they usually would.
Model answer
They may work out the purpose of the study and adjust their effort to fit what they think the researcher expects, showing demand characteristics.
Other ways to work this
The same content, four other ways.
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