AQA A-Level Psychology 7182
Social Influence
Memory
Attachment
Approaches in Psychology
Biopsychology
Clinical Psychology and Mental Health
Research Methods
Scientific Processes
Quantitative and Qualitative Data
Data Handling and Analysis
Inferential Testing
Issues and Debates in Psychology
RelationshipsOption 1
GenderOption 1
Cognition and DevelopmentOption 1
SchizophreniaOption 2
Eating BehaviourOption 2
StressOption 2
AggressionOption 3
Forensic PsychologyOption 3
AddictionOption 3
Explanations for Nicotine AddictionOption 3
Scientific Processes
Sampling
- 3 things to know
- Paper 2
Overview
Random, stratified, systematic, opportunity and volunteer sampling, how each sample is drawn, and the bias each one carries.
What you need to know
Answer each one before you reveal it.
Describe how a stratified sample is put together.
Describe systematic, opportunity and volunteer sampling, and the bias each carries.
Questions from this subtopic
Each one with the model answer underneath.
- 1
What is a population in psychological research?
Model answer
The entire group of individuals that a researcher is interested in studying and drawing conclusions about.
- 2
Define what is meant by a sample in research.
Model answer
A subset of individuals selected from the population to participate in a study.
- 3
How does a sample differ from a population?
Model answer
The population is the entire target group the researcher wants to generalise findings to, while the sample is the smaller group actually studied.
- 4
What is random sampling?
Model answer
A method where every member of the target population has an equal chance of being selected for the sample.
- 5
Define systematic sampling.
Model answer
Selecting participants at regular intervals from a list of the target population.
- 6
What is the first step in stratified sampling?
Model answer
Identify relevant subgroups in the population.
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