Predictive Validity The level of testing or measuring instrument that can predict future performance, functioning, or behavior. *You need to show that measures that should not be related are in reality not related.
(i.e.: You should be able to discriminate between dissimilar constructs). Make sure sample is large enough to generalize Discriminant Validity shows the measures of constructs that theoretically should not be related to each other are, in fact, observed to not be related to each other.
Replication of a study producing consistent results increases the external validity. External validity depends on the representativeness of a sample and the rigor of an experiment. External Validity The degree to which the results of a study can be generalized to a target population. A new test may be derived secondary to decreased time and decreased cost than another validated instrument. Concurrent Validity The degree of correlation with another standardized instrument.
0 kommentar(er)
