reliability and validity
- Created by: saskiaelise
- Created on: 05-01-21 13:12
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- reliability and validity
- validity - the extent to which a researcher has measured what they intended to measure
- external validity - the extent to which an observed effect can be generalised
- eg temporal population
- umbrella term
- ecological validity - can results be generalised to other settings
- temporal validity - can findings be generalised beyond the historical context of the study eg Milgram's obedience study
- population validity - the extent to which findings of a study can be generalised to the wider population
- historical validity - concerns the ability to generalise a research effect beyond the particular time period of the study
- internal validity - whether effects of a study are due to manipulation of the IV
- concurrent validity - how well a psychological measure relates to an existing similar measure eg exam papers
- face validity - whether something appears to measure what it claims to
- content validity - demonstrates that the content of a test/measurement represents the area of interest
- construct validity - demonstrates the extent to which performance on the test measures an identified underlying construct
- often in questionnaires
- reliability - the consistency of measurements + is it replicable?
- inter-rater reliability - whether two or more observations of the same behaviour are consistent eg consistency of exam marking
- if it ain't 8 it ain't great!!
- test-retest reliability - assessing the consistency of a test to see how similar scores are when a person is tested twice
- predictive validity - correlating the results of a test with other examples of the behaviour that is being researched
- external reliability - the extent to which a measure varies from one occasion to another
- internal reliability - a measure of the extent to which something is consistent within itself
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