What is convergent and discriminant validity?
What are Convergent Validity and Discriminant Validity? Convergent validity takes two measures that are supposed to be measuring the same construct and shows that they are related. Conversely, discriminant validity shows that two measures that are not supposed to be related are in fact, unrelated.
What is Convergent validity in psychology?
Convergent validity, a parameter often used in sociology, psychology, and other behavioral sciences, refers to the degree to which two measures of constructs that theoretically should be related, are in fact related. Convergent validity, along with discriminant validity, is a subtype of construct validity.
What is discriminant validity in research?
Definition. Discriminant validity is demonstrated by evidence that measures of constructs that theoretically should not be highly related to each other are, in fact, not found to be highly correlated to each other.
How do you show discriminant validity?
To establish discriminant validity, you need to show that measures that should not be related are in reality not related.
How do you do predictive validity?
Definition of Predictive Validity: The best way to directly establish predictive validity is to perform a long-term validity study by administering employment tests to job applicants and then seeing if those test scores are correlated with the future job performance of the hired employees.
What is a good predictive validity score?
A typical predictive validity for an employment test might obtain a correlation in the neighborhood of r=. 35. Higher values are occasionally seen and lower values are very common.
Why is predictive validation more difficult?
Why is this type of validation more difficult? Predictive validation is considered to be difficult because the research process is tedious itself. The researcher has to give the tests to the individuals who were hired, wait for a certain period of time and finally measure their performance.
What is the difference between concurrent and predictive validity?
Concurrent validity is demonstrated when a test correlates well with a measure that has previously been validated. The two measures in the study are taken at the same time. This is in contrast to predictive validity, where one measure occurs earlier and is meant to predict some later measure.
What are the three main types of evidence on validity that a researcher might collect?
The information gathered to support a test purpose, and establish validity evidence for the intended uses of a test, is often categorized into three main areas of validity evidence. These are content, criterion, and construct validity.
What affects internal and external validity?
Internal validity refers to the degree of confidence that the causal relationship being tested is trustworthy and not influenced by other factors or variables. External validity refers to the extent to which results from a study can be applied (generalized) to other situations, groups or events.