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15 Cards in this Set
- Front
- Back
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Internal Validity - General |
If it is testing what it says it's going to test |
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Internal Validity - Experiment |
If the IV is effecting the DV |
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Assessing Internal Validity |
Split Half Technique
randomly split half the questionnaires or the observation categories from observation into two halves, then see if two halves are consistent (do the two halves agree) - see if theres a correlation |
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Improving internal validity |
Look at the questions that are performing inconsistently and change them then do the split half again |
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External Validity |
Can it be generalised |
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Population validity |
Can it be generalised to a large population |
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Temporal Validity |
Can it be generalised to more than one specific time |
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Ecological Validity |
Can it be generalised to a different environment |
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Assessing External Validity |
Test, Re-test |
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Improving External Validity |
Finding the questions not performing correctly and changing them |
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Reliability |
It if it 'Consistent' |
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Reseacher Reliability |
More than one researcher conducting the experiment and gathering evidence the same way. Researcher reliability will come from if the results are the same. |
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Inter rater reliability |
Observation based. Whether two or more observers agree with each other, if so they record exactly the same data |
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Assessing Researcher Reliabiltiy |
comparing the scores of the results to see if they agree, possibly doing a correlation depending on the type of results |
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Improving researcher reliability |
Pilot the study and detailed standardised instructions should be written to ensure consistency. Careful training of researchers |
