Reliability and Validity Flashcards
what is inter rater reliability?
the consistency between two different interviewers
what is external reliability?
a measure of whether something varies from one time to another (i.e. whether it is consistent)
how can external reliability be measured?
test-retest: same test is given to same participants on two occasions to see if the same result is obtained
what is internal reliability?
a measure of whether a questionnaire is consistent within itself?
how can internal reliability be measured?
split half method: test items split into two halves and scores on both halves compared - should be similar if test is reliable
what is external validity?
concerns the extent to which the findings from a questionnaire or interview can be generalised beyond the particular study
what is population validity?
concerns the extent to which results of a study can be generalised to other groups of people besides the participants who took part in the study
what is ecological validity?
concerns the ability to generalise a research effect beyond the particular setting in which it is demonstrated to other settings
what is internal validity?
concerns whether a test assesses what it intended to assess
what is face validity?
whether items on a test look like they are assessing what the researcher intended to assess
what is construct validity?
whether a test assesses the underlying concepts
what is concurrent validity?
can be established by comparing performance on a new test with a previously validated test on the same topic
what is criterion validity?
refers to the extent that test scores can predict a future behaviour or attitude
