reliability and validity Flashcards
Reliability:
This is the consistency of research or findings or whether the test can be used more than once to produce consistent results
internal reliability
refers to the consistency of results of a test across items within the test
external reliability
refers to the extent to which a test score varies from one time to another
inter rater reliability
n order to avoid observer bias inter-rater reliability needs to be established. This is means there are more than one observer observing the same behaviour. If they gain the same results it is inter-rater reliable
split-half
is a way to test internal reliability. It would test half the questions and gain a score from it and then test the the other half. If they showed the same score they are reliable
test-retest
method tests external validity of a questionnaire or piece of research. A high level of standardisation makes a piece of research replicable.
validity
This is how accurate a piece of research or test is at measuring what aims to measure
internal validity
is how the research is measuring the DV and the effect of the IV on it, a lower interval validity would be caused by extraneous variables
external validity
is how much the research can be generalized to other settings
face validity
is how good the test or research looks to be at testing what is meant to be tested.
Construct validity
is where a test or study measures the actual behaviour it sets out to measure.
Concurrent validity
is where a test or piece of research gives the same results as another test to study which claims to measure the same behaviour
Criterion validity
refers to how much one measure predicts the validity of another measure.
Population validity
is how accurately the test or study measures behaviour in the general population.
Ecological validity
is considered to be how like real life a piece of research is
