This accessible book outlines the key ingredients of psychological assessment and provides case studies to illustrate their application, making this an ideal textbook for courses on psychometrics or psychological assessment. The book covers the nature of assessment, basic components, how tests are made, underlying statistics, reliability and validity, assessment of intelligence, abilities and personality, non-psychometric approaches, as well as ethical and professional issues and modern developments. A final chapter explains how readers can construct their own tests. Wide-ranging case studies demonstrate the variety of contexts in which assessment is conducted. The author’s clarity of writing and use of practical examples throughout helps students apply these methods in practice with confidence as part of their studies on an array of courses.

The Significance of Validity

The significance of validity

Learning Objectives

By the end of this chapter you should be able to:

  • Understand the significance of validity and what it means, and explain the different models, including content, criterion-related and construct validity.
  • Outline what is meant by ‘spurious validity’ and give an account of its different forms.
  • Explain the nature and purpose of validation.
  • Evaluate validity coefficients and identify the factors which influence them.

What is This Chapter about?

Validity and validation are crucial to understanding psychological assessment. We explain the different models of validity and their application to forms of assessment. If you are going to buy and use them in the future you will need to know what is involved in validation and how to evaluate this, so we look at how ...

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