Do Engineers Need to Become More Persuasive? About the Why and How of Vocal-Charisma Training

This paper discusses the importance of charismatic communication for engineers and outlines effective strategies for training vocal charisma, particularly in high-stakes contexts like investor pitches or idea pitches to supervisors. Drawing from interdisciplinary research, the paper argues that engineers often underestimate the communicative components of persuasion, which hampers the acceptance of their innovations. Particularly acoustic voice features—such as intonation, tempo, and loudness variation—tend to be overlooked, although a growing body of research consistently shows that such features play a crucial role in selling ideas or products successfully. Furthermore, the paper corrects the still widespread but outdated notion of charismatic communication as an innate trait and replaces it with the concept of a dynamic signaling system, in accord with the emerging scientific consensus. Building on these knowledge and concept overviews, the paper proposes a five-step approach to effective and sustainable vocal-charisma training. This includes analytic listening, targeted feedback, regular motor-based practice, expert coaching, and personal growth. Practical applications are illustrated with examples from engineering education and entrepreneurship programs. The findings underscore that enhancing vocal charisma is not merely a soft skill, but a strategic asset for engineers tasked with making ideas happen.