I-IV -- Acknowledgements -- Preface -- List of Contributors -- Part I: Neurobiological advances -- Evolutionary neurology and the origin of language as a cognitive adaptation -- Language development and biological programming: behavioral and electrophysiological indices -- Primate communication, comparative neurology, and the origin of language re-examined -- Part II: Perceptual bases -- Grasping and the gesture theory of language origins -- Ways to accelerate progress in glottogonic research -- Implication and the evolution of language -- Perceptual bases for the evolution of speech -- Part III: Fossil evidence -- Neoteny and language evolution -- Language evolution and pedomorphosis -- Language evolution and pedomorphosis A reply to Jan Wind -- Brain size and the evolution of language -- Laryngeal descent in 40,000 year old fossils -- Part IV: Linguistic evidence -- Live speech and preverbal communication -- On linguistic territoriality, iconicity and language evolution -- Vestiges of primeval phonology in certain ancient languages -- The synchronous development of language and kinesics: Further evidence -- Behavioral flexibility and the evolution of language -- Index