Eduqas A-Level Psychology A290QS
Biological Approach
Psychodynamic Approach
Behaviourist Approach
Cognitive Approach
Positive Approach
Comparing the Five Approaches
Core Studies in Social and Developmental Psychology
Planning Psychological Research
Data Handling, Statistics and Mathematical Skills
Evaluating and Validating Research
Personal Investigations and Novel Research Scenarios
Addictive BehavioursAddictive
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Bullying BehavioursBullying
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Controversies in Psychology
Personal Investigations and Novel Research Scenarios
Personal investigations: applying research methods to first-hand investigations — Sampling
- 3 things to know
- Component 2
Overview
Recall questions on Personal investigations: applying research methods to first-hand investigations — Sampling.
What you need to know
Answer each one before you reveal it.
Which sampling method is usually used for a school-based investigation, and why?
How does your sample limit the conclusions you can draw?
Questions from this subtopic
Each one with the model answer underneath.
- 1
Name three things that should be standardised in your own experiment.
Model answer
The instructions given to participants, the materials and timings used, and the physical conditions in which the study is run.
- 2
Why is it worth running a pilot study before your own investigation?
Model answer
Because a small trial run reveals unclear instructions, faulty materials or an unworkable timing before the real data are collected, when they can still be changed.
- 3
Which sampling method is usually used for a school-based investigation, and why?
Model answer
Opportunity sampling is usually used, because it draws on whoever is available and willing, which is quick and practical within a school.
- 4
State one strength and one limitation of using an opportunity sample in your own investigation.
Model answer
It is fast and convenient to obtain, but it is likely to be unrepresentative because everyone comes from a narrow age range and setting.
- 5
How does your sample limit the conclusions you can draw?
Model answer
A small sample of similar students cannot be assumed to represent the wider population, so the findings should be generalised only with caution.
- 6
Which descriptive statistics should be reported from your own two-condition experiment?
Model answer
A measure of central tendency such as the mean for each condition, together with a measure of dispersion such as the standard deviation.
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