Chapter 1 Empirical Evidence for the Claim That the Vocal Theory of Language Origins and the Gestural Theory of Language Origins Are Not Incompatible with One Another

Chapter 2 Primate Vocal Anatomy and Physiology: Similarities and Differences Between Humans and Nonhuman Primates

Chapter 3 Integrations of Multiple Abilities Underlying the Vocal Evolutions in Primates

Chapter 4 Conversation Among Primate Species

Chapter 5 Language Evolution from a Perspective of Broca’s Area

Chapter 6 Social Scaffolding of Vocal and Language Development

Chapter 7 Emergence of the Distinction Between “Verbal” and “Musical” in Early Childhood Development

Chapter 9 Were Musicians As Well as Artists in the Ice Age Caves Likely with Autism Spectrum Disorder? A Neurodiversity Hypothesis