Imagined interactions (IIs) are a type of daydreaming in which individuals think about conversations in their minds. IIs are attempts to simulate real-life conversations with others. This book is about the characteristics and functions of IIs. Chapter 1 reviews some of the research on components of daydreaming. Chapter 2 describes eight characteristics of IIs and Chapter 3 discusses functions of IIs. Chapters 4 and 5 elaborate on two of these functions in more detail due to their importance and the prevalence of research in these functions. Chapter 6 discusses cross-cultural characteristics and functions of IIs in Japan and Thailand compared to the United States. Chapter 7 consists of studies of imagined interactions in a variety of contexts and the final chapter provides a practical guide to enhancing communication effectiveness and self-confidence through IIs.