How do you determine 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.
What is external validity concerned with?
External validity is the validity of applying the conclusions of a scientific study outside the context of that study. In other words, it is the extent to which the results of a study can be generalized to and across other situations, people, stimuli, and times.
What is an example of discriminant validity?
Discriminant validity tests whether believed unrelated constructs are, in fact, unrelated. Discriminant validity would ensure that, in the study, the non-overlapping factors do not overlap. For example, self esteem and intelligence should not relate (too much) in most research projects.
What are the two types of criterion related validity?
As you learned from the Module, there are two types of Criterion-Related Validity, Predictive and Concurrent.
What type of validity is the most difficult to measure?
construct validity
How do you determine validity and reliability?
Reliability can be estimated by comparing different versions of the same measurement. Validity is harder to assess, but it can be estimated by comparing the results to other relevant data or theory. Methods of estimating reliability and validity are usually split up into different types.
What is the difference between construct and content validity?
Construct validity means the test measures the skills/abilities that should be measured. Content validity means the test measures appropriate content.
How do you describe construct validity?
Construct validity refers to the degree to which inferences can legitimately be made from the operationalizations in your study to the theoretical constructs on which those operationalizations were based. Like external validity, construct validity is related to generalizing.
How do you ensure content validity?
How can you increase content validity?
- Conduct a job task analysis (JTA).
- Define the topics in the test before authoring.
- You can poll subject matter experts to check content validity for an existing test.
- Use item analysis reporting.
- Involve Subject Matter Experts (SMEs).
- Review and update tests frequently.