Observation, Self-report, Correlation and Case Study
Evaluate non-experimental ways of studying behaviour and distinguish association, description and interpretation from causal evidence.
How to study A-level Psychology
For every claim, identify the mechanism, supporting evidence, method, alternative explanation, practical implication and justified conclusion.
Core concepts
Concept 1
Observations vary by naturalistic or controlled setting, participation, disclosure and behavioural coding.
Exam cue: Define observable behavioural categories that are mutually exclusive and sufficiently complete.
Concept 2
Questionnaires and interviews use open or closed questions and require careful wording, interviewer control and response interpretation.
Exam cue: Distinguish a correlation coefficient from proof that one variable causes another.
Concept 3
Correlations measure the direction and strength of association, while case studies and content analysis can provide detailed or systematically coded evidence.
Exam cue: Match the method to the sensitivity, depth and ecological setting of the research question.
Targeted study blocks
Multi-board knowledge
Secure the shared psychological core
Learn the common collection techniques—observation, self-report, correlation and detailed case evidence—and how quantitative and qualitative forms can complement one another.
Scientific reasoning
Use evidence before reaching a judgement
Evaluate what the method can legitimately show, which biases affect the record and whether triangulation or a different method would strengthen the conclusion.
Risk pitfalls and guardrails
Treating self-report answers as direct measures of behaviour.
Guardrail: Do not memorise a study as an isolated story or assume that one board's named research and option choices apply nationally.
Using leading or double-barrelled questions.
Guardrail: Do not memorise a study as an isolated story or assume that one board's named research and option choices apply nationally.
Inferring causation from an association without manipulation and control.
Guardrail: Do not memorise a study as an isolated story or assume that one board's named research and option choices apply nationally.
Memory anchors
Naturalistic observation
Behaviour is observed in the setting where it would normally occur.
Behavioural category
A behavioural category is an operationally defined action used to code observation.
Open question
An open question permits a participant-generated qualitative response.
Correlation coefficient
A correlation coefficient summarises the direction and strength of association.
Case study
A case study investigates one person, group, event or institution in depth.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
What makes an observation naturalistic?
Why might a controlled observation be easier to replicate?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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