Practical Psychometrics
A Guide for Test Users
Benjamin J. Lovett
1. Introduction to Testing
- Four Testing Stories
- A Preview of the Book
- Basic Terms in Testing
- Tests as Assessment Tools
2. Statistical Concepts
- Univariate Descriptive Statistics
- Bivariate Descriptive Statistics: Correlation and Regression
- Group Differences
- Conclusions
- Applied Exercises
3. The Meaning of Test Scores
- Norm-Referenced Scores
- What’s Normal? What’s Not?
- Issues in Norm-Referenced Score Interpretation
- Conclusions
- Applied Exercises
4. Reliability
- Defining Reliability
- Evaluating a Test’s Reliability: Background
- Practical Ways of Estimating Reliability
- Interpreting and Applying Reliability Estimates
- Reliability of Differences and Profiles
- Item Response Theory
- Conclusions
- Applied Exercises
5. Validity
- Tests, Constructs, and Inferences
- Types of Validity Evidence
- Validity and Classification
- Evaluating Validity Evidence
- Conclusions
- Applied Exercises
6. Factor Analysis
- EFA: A Few Motivating Examples
- Reviewing EFA Data
- Factor Analysis and Diagnostic Testing
- Factor Analysis and Validity
- Confirmatory Factor Analysis
- Conclusions
- Applied Exercises
7. Bias and Fairness
- The Problem of Group Differences
- Test Bias and Psychometric Validity
- Contrasting Bias with Other Problems
- Fairness in Test Use
- Conclusions
- Applied Exercises
8. Sharing Test Results
- The Oral Feedback Session
- The Written Report
- Conclusions
Appendix A. Resources for Further Study
Appendix B. Answers for Applied Exercises
Glossary
References
Index
About the Author