In this book, medical psychologists, psychotherapists, speech therapists, and other interested readers learn what the voice as an individual characteristic can reveal about a speaker.

The voice is a bodily instrument, a non-verbal phonetic expression, a contact organ, a medium of communication, an indicator of the conversational relationship, and an aesthetic object. Initially, the author describes how a healthy voice functions. She explains key terms, provides foundational knowledge about the development of vocal function, and illustrates the connection between voice, gender, age, and other personal characteristics. The reader gains insight from a psychological perspective on how vocal expressions can indicate inner states, particularly emotional ones, and how the quality of the voice is influenced by psychological factors.