Reliability And Validity Flashcards
Define reliablity
Whether or not the results of a study are consistent (always the same)
Define internal reliability
Within one test/study do all of the different parts of the study give the same result
Define the split half method of testing reliability
Take a study or test, divide the procedure in half and see if theres a positive correlation between the scores on the two halves. If there is = high internal reliability
Define external reliability
Whether or not you’d get the same result if you did the whole study/test again - are the results consistent over time?
Define test-retest reliability
When you repeat a study or test at a later date or time to look for a positive correlation between the sets of scores
Define inter-rater reliability
When several different people are carrying out a test, do they all give the same score to the same behaviour/responses?
Define validity
Are the results accurate? Are we testing what we mean to test
Define internal validity
Does the specific test measure exactly what you need to measure?
Internal validity: define face validity
Does the test look like it measures what its suppose to?
Internal validity: define construct validity
Do the results of the test actually reflect what you’re trying to measure
Internal validity: define concurrent validity
Does your test give the same results as another established test of the same variable (e.g. Does your new IQ test get the same scores as an old, well-known IQ test)
Internal validity: define predictive/criterion validity
Do your results help you to predict future behaviour?
Define external validity
If the results tell us anything true that can be applied outside of the study
External validity: define population validity
Can your results be applied to people outside the study
External validity: define ecological validity
Can you apply the results of your study to the real world
