Validity Flashcards
What are demand characteristics?
When a participant changes their behaviour to suit the ties of the experiment.
What are the three types of external validity?
Ecological validity.
Population validity.
Historical validity.
What is ecological validity?
How well the environment of a study reflects real life.
Would a field or lab show more ecological validity?
Field.
What is population validity?
How representative a sample is of the target population.
What is a study that has very low population validity?
Glasgow babies.
What is historical validity?
Does the experiment stand the test of time?
Is it still relevant now?
What is internal validity?
The degree to which the IV causes the changes in the DV.
(have you measured what you meant to measure)?
In what situation will the results be due to the IV?
When there are no confounding variables.
What is one way you can ensure standardised instructions?
Using script.
What are the two ways you can check validity?
Face validity.
Concurrent validity.
What is face validity?
The degree to which a procedure appears effective in terms of its stated aims.
Does it seem to be valid?
What is concurrent validity?
Measure of how well a particular test correlates with a previously validated measure.
Testing you have measured what you meant to measure by using another test at the came time.
What is one example of how you can use concurrent validity?
If you are measuring levels of anxiety, measure two different forms of testable anxiety.
Someone may just be sweaty.
How can you improve population validity?
Using a bigger sample with a range of people.
