Chapter 3 Objectives

After studying this chapter and completing the structured exercises in the module, you should be able to:

• Define the concepts of validity and systematic measurement error.
  
• Given specific examples, analyze the predominant sources of systematic error affecting the validity of assessment results.
  
• Describe the concept of validation and different methods for gathering validity evidence.
  
• Relate different methods for gathering validity evidence to validation questions and assessment purposes.
  
• Define the concepts of reliability and random measurement error.
  
• Given specific applications, analyze the predominant sources of random error that could influence reliability of assessment results.
  
• Identify factors that affect assessment utility and interpretation of results in particular applications.
  
• Identify steps and actions that can be taken during assessment design and selection to enhance validity, reliability, and utility of an assessment tool and its results.

The purpose of the Chapter Highlights is to help you remember key concepts. As you review the summary, click on underlined terms (terms with activated links) to retrieve glossary definitions. If too many terms seem unfamiliar or you miss too many items on the structured comprehension exercises and tests provided for each chapter in this computer module, you may want to re-read the chapter or see your instructor.