importance of validity and reliability in assessment

In the 1980s, the understanding of validity shifted again, to an emphasis on providing evidence to support the particular inferences that teachers make from assessment results. Most measurement textbooks of that era classified validity by three types-content, criterion-related, and construct-and suggested that validation of a test should include more than one approach. The concept of validity changed, however, in the 1950s through the 1970s to focus on evidence that an assessment tool is valid for a specific purpose. It was common in that era to support a claim of validity with evidence that a test correlated well with another “true” criterion. Tests were characterized as valid or not, apart from consideration of how they were used. Early definitions, formed in the 1940s and early 1950s, emphasized the validity of an assessment tool itself. It also discusses important practical considerations that might affect the choice or development of tests and other instruments.ĭefinitions of validity have changed over time. This chapter explains the concept of assessment validity, the role of reliability, and their effects on the interpretive quality of assessment results. What are the consequences of the particular uses and interpretations that are made of the results ( Miller, Linn, & Gronlund, 2013, p. To what extent will the interpretation of the scores be appropriate, meaningful, and useful for the intended application of the results?Ģ. Participants will apply their knowledge from Lesson 1 to determine the validity and reliability of given multiple choice items.1. Participants will explore the definitions and significance of assessment validity and reliability with regard to multiple choice questions.

Participants will review the anatomy of multiple choice items. Determine the degree of validity or reliability for a test item, given a situation.Understand the importance of using valid and reliable assessment items, and.

Recognize the elements that make up a standard multiple choice item,.Also, participants will learn to evaluate a given item's level of validity or reliability.

This unit is designed to review the concepts of validity and reliability and their significance in designing multiple choice items.

Importance of validity and reliability in assessment