This book investigates the critical factors influencing the usability of speech dialog systems by focusing on the perspectives of their target users. Thomas Hempel, drawing on research in human-computer interaction and linguistics, presents an analysis of how user expectations, cognitive processes, and interaction design impact the effectiveness and acceptance of voice-based interfaces. The work synthesizes empirical studies and theoretical frameworks to offer a comprehensive understanding of what makes these systems truly user-friendly.

This work is recognized as a contribution to the field of human-computer interaction, specifically addressing the design and evaluation of speech dialog systems. It is likely to be of interest to researchers and practitioners in natural language processing, usability engineering, and artificial intelligence. The book's focus on user-centric evaluation suggests a practical application for developers aiming to create more intuitive and effective voice interfaces.