Lienert and Raatz's book "Testaufbau und Testanalyse" (6th edition) provides a comprehensive guide to test construction and analysis. The book is structured into 15 chapters, covering fundamental concepts of testing, planning problems, test design, question construction, analysis of test items, calculation of difficulty indices, reliability and validity, test development, test administration, and interpretation of test results. It discusses the essential qualities of tests, including objectivity, reliability, validity, and economy, and explores different types of test questions. The text also delves into the analysis of test items, including the determination of difficulty, discrimination power, and inter-item correlations. It covers the development of test forms, the construction of parallel tests, and the evaluation of test batteries. The book emphasizes the importance of test reliability and validity, explaining various methods for their assessment, such as test-retest, parallel test, and split-half methods. It also discusses the interpretation of test results, including the use of standard error of measurement and the prediction of criterion-related validity. The book is a detailed resource for educators and researchers involved in test development and analysis.Lienert and Raatz's book "Testaufbau und Testanalyse" (6th edition) provides a comprehensive guide to test construction and analysis. The book is structured into 15 chapters, covering fundamental concepts of testing, planning problems, test design, question construction, analysis of test items, calculation of difficulty indices, reliability and validity, test development, test administration, and interpretation of test results. It discusses the essential qualities of tests, including objectivity, reliability, validity, and economy, and explores different types of test questions. The text also delves into the analysis of test items, including the determination of difficulty, discrimination power, and inter-item correlations. It covers the development of test forms, the construction of parallel tests, and the evaluation of test batteries. The book emphasizes the importance of test reliability and validity, explaining various methods for their assessment, such as test-retest, parallel test, and split-half methods. It also discusses the interpretation of test results, including the use of standard error of measurement and the prediction of criterion-related validity. The book is a detailed resource for educators and researchers involved in test development and analysis.