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Ch 22: Assessment, Diagnosis & Psychometrics

About This Chapter

Strengthen your knowledge on assessment, diagnosis and psychometrics with the help from our expert instructors and lessons. Refresh your knowledge on the types of measurement and the threats to external validity.

Assessment, Diagnosis & Psychometrics - Chapter Summary

The chapter is designed to help you confidently recall information about assessments, diagnosis and psychometrics in psychology. See examples of some methods and learn about the ethical standards for psychological testing. Upon completion of this chapter, you will be comfortable with the following topics:

  • Types of psychometric tests
  • Compare CTT and IRT
  • The standards that are used for testing
  • Standardization vs norms
  • Measuring traits
  • Significance of reliability and validity
  • Four types of validity
  • Goals of research
  • Factors that impact external validity
  • Testing bias

When you study with us, you will have the opportunity to take advantage of many of our chapter's resources such as video lessons and lesson transcripts. When you are done studying, you can take our lesson quizzes. These quizzes will test you on the lesson's material. You will get immediate feedback on these quizzes so you will be able to identify your weak areas right away.

10 Lessons in Chapter 22: Assessment, Diagnosis & Psychometrics
Test your knowledge with a 30-question chapter practice test
Psychometrics: Definition & Test Examples

1. Psychometrics: Definition & Test Examples

This lesson defines psychometrics and discusses what is involved in psychometric testing. It also delves into types of psychometric tests, including noting some specific examples of these tests.

Classical Test Theory & Item Response Theory

2. Classical Test Theory & Item Response Theory

Psychometrics is the study of developing tests and measurements. In this lesson, we'll talk about two different theories of how psychologists can create good tests and measurement: classical test theory and item response theory.

The Standards for Education & Psychological Testing

3. The Standards for Education & Psychological Testing

Standards for Educational and Psychological Testing tells readers everything they need to know about testing accurately and ethically, from classroom to counseling office to career.

Standardization and Norms of Psychological Tests

4. Standardization and Norms of Psychological Tests

Many psychological tests, including intelligence tests, are about comparing your score to others' scores to see how you did. Watch this lesson to find out about two important concepts in psychology: standardization and norms.

Types of Measurement: Direct, Indirect & Constructs

5. Types of Measurement: Direct, Indirect & Constructs

How do you measure psychological traits? In this lesson, we'll look at how psychologists measure traits, including direct and indirect observation. We will also explore why psychological traits are so difficult to measure.

Reliability & Validity in Psychology: Definitions & Differences

6. Reliability & Validity in Psychology: Definitions & Differences

How do validity and reliability contribute to study design in psychology? In this lesson, you'll look at how experiments can fail reliability and validity requirements to get an idea of the challenges behind conducting significant psychological research.

The Validity of Measurement: Definition, Importance & Types

7. The Validity of Measurement: Definition, Importance & Types

How do you know if you are measuring what you actually want to measure? In this lesson, we'll look at what validity is, why it is important, and four major types of validity: face, construct, content, and predictive validity.

Threats to External Validity: Sample Characteristics, Stimulus Characteristics & Experimental Arrangements

8. Threats to External Validity: Sample Characteristics, Stimulus Characteristics & Experimental Arrangements

The goal of research is to generalize the results, but there are several things that can get in the way. This lesson examines three threats to external validity: sample characteristics, stimulus characteristics, and multiple-treatment interference.

How Novelty Effects, Test Sensitization & Measurement Timing Can Threaten External Validity

9. How Novelty Effects, Test Sensitization & Measurement Timing Can Threaten External Validity

The purpose of research is to find things out about the world at large. But there are several things that can get in the way of external validity. In this lesson, we'll examine novelty effects, test sensitization, and measurement timing.

Testing Bias, Cultural Bias & Language Differences in Assessments

10. Testing Bias, Cultural Bias & Language Differences in Assessments

Assessments are used to gain useful information about test-takers' knowledge, skills and progress. Sometimes, however, the results of these assessments are incorrect due to biases. This lesson will differentiate and discuss types of testing bias and differences among test-takers that may lead to testing bias.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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