WJEC A-Level Psychology 601-5719-7
Psychology Past to Present — The Five Approaches
Contemporary Debates
Principles of Research and Application of Research Methods
Mathematical Requirements for Psychology (Appendix A: AS Unit 2 and A2 Unit 4)
Addictive BehavioursAddictive
Autistic Spectrum BehavioursAutistic spectrum
Bullying BehavioursBullying
Criminal BehavioursCriminal
SchizophreniaSchizophrenia
StressStress
Controversies in Psychology
Applied Research Methods
Principles of Research and Application of Research Methods
Validity: internal validity and external validity
- 3 things to know
- AS Unit 2
Overview
Recall questions on validity, internal validity, external validity, ecological validity and population validity.
What you need to know
Answer each one before you reveal it.
Define external validity.
Name three things findings must generalise to for a study to have external validity.
Questions from this subtopic
Each one with the model answer underneath.
- 1
What is meant by validity?
Model answer
Validity is whether a study or a measure genuinely tests what it claims to test, so that the findings are legitimate.
- 2
Define internal validity.
Model answer
Internal validity is the extent to which the results are genuinely caused by the manipulation of the independent variable rather than by some other factor or a flaw in the measure.
- 3
Define external validity.
Model answer
External validity is the extent to which the findings of a study can be generalised beyond the study itself.
- 4
Name three things findings must generalise to for a study to have external validity.
Model answer
Other people, other settings and other periods of time.
- 5
What is ecological validity?
Model answer
It is the extent to which findings can be generalised to real-life settings and everyday tasks beyond the situation in which the research took place.
- 6
What is population validity?
Model answer
The extent to which findings from a sample can be generalised to the wider target population from which it was drawn.
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