Constructing Psychological Instruments: Psychometric Theory and Practice for Informed Decision-Making

"Constructing Psychological Instruments: Psychometric Theory and Practice for Informed Decision-Making" is a textbook designed for psychology students and researchers engaged in the development and evaluation of psychological measurement instruments. The textbook comprises 10 chapters that guide readers through defining key concepts, stages of instrument development, and various classification systems for psychological instruments, followed by detailed examination of essential psychometric properties: item and test difficulty and discrimination, objectivity, reliability, and content, response process, face, structural, and external validity. The text is characterized by an accessible and occasionally humorous writing style, while simultaneously maintaining a thoroughly contemporary, detailed, and rigorous treatment of psychometric topics. Reading this textbook provides a solid foundation for understanding the world of psychological measurement, while preparing readers for mastering the advanced psychometric models announced for the second volume.