Validity Flashcards
Validity refers to what
whether a test actually measures what it claims to be measuring
External validity is what
whether the results obtained can be generalised to other situations and people outside of the research environment
Temporal validity is what?
How well can the results be generalised over time
Ecological validity is what?
How well can results be generalised to other settings
Population validity is what?
How well can the results from the sample used be extrapolated to a population as a whole?
Cross-cultural validity is what?
how well can results from a study be applied to people from different cultures?
How do you access external validity
replicate study in different times and places
Internal validity is what
whether the researcher tested what they intended to test
Two types/ways to asses internal validity are
Face validity and Concurrent validity
type/ assessing internal validity is Face validity what is it?
does it look like that the experiment I going to measure what I set out to measure?
type/ assessing internal validity is Face validity how is it done?
asses by asking independent judges to decide whether they think the measuring instrument measures what it set out to measure
type/ assessing internal validity is Concurrent validity what is it?
asks whether a measure is in agreement with pre-existing measures validated to test for the same concept
type/ assessing internal validity is Concurrent validity how is it done?
- Compare performance on a new test with another previously established test measuring the same thing
- Participants completes both tests (new and established test)
- If there is a positive correlation between the two test results then the new test has concurrent validity
Factors affecting internal validity
confounding variables, investigator effects, demand characteristics, social desirability bias, poor behavioural category operationalisation, ambiguity In questionnaires
