Validity
- Created by: Karen Askew
- Created on: 05-01-17 09:07
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- Validity
- Internal Validity
- Has the researcher measured what they intended to measure
- When we can conclude that the IV is the thing affecting the DV rather than EVs
- Can only conclude in a lab setting
- External Validity
- When we can say that our results can be generalised
- Results can be generalised to other: Settings, cultures, times or the whole population.
- Population Validity - generalising to the rest of the population
- Ecological Vaildity - generalising to situations outside the experiment setting
- Cross-cultural Validity - generalising to other cultures
- Temporal Validity - generalising to all time periods
- Checking Validity
- It is not actually possible as we will never know whether it is our IV that has affected the DV.
- However, we can do things to improve validity to help us assume that the IV affected the DV
- Improving Validity
- Face Validity: You or another person looks at the test. Does it look like it measures what it set out to do?
- Concurrent validity: Compare your test to an established test that has validity. See if your test measure the same as the established one
- Internal Validity
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