Validity
Validity
The quality of measurement is quantified by validity and reliability, and measurements experts universally agree that validity is pre-eminent. This chapter provides an in-depth discussion of modern validity theory and is arguably the most important content area. It is informed by the influential work of Samuel Messick and aligns with the Standards for Educational and Psychological Testing. The chapter begins by contrasting modern validity theory with classical definitions that are still commonly used in social work research. It then summarizes the different sources of validity evidence, sources of invalidity, and the process of integrating validity evidence.
Keywords: validity, validity theory, theory construction, theory testing, reliability
Oxford Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.
Please, subscribe or login to access full text content.
If you think you should have access to this title, please contact your librarian.
To troubleshoot, please check our FAQs , and if you can't find the answer there, please contact us .