Chimps, children, and creoles : the need for caution / Jean Aichison -- Some problems with an evolutionary view of written language / David Barton -- Essentialism in language / Bernard H. Bichakjian -- The invention of the syllable : reflections of a humanist on the biology of language / Robert Payson Creed -- Genetic classification and the historical method / Angela Della Volpe -- Animal communication and human language : searching for their evolutionary relationship / Gábor Györi -- From proto-language to grammar / Martin Hildebrand-Nilshon -- The biological imperatives in communicative interaction / Mary Ritchie Key -- Ritual/representation as the semiogenetic precursor of hominid symbol use / Jo Liska -- Language acquisition and the essentialist-evolutionist debate / David J. Messer -- Group selection in the biocultural evolution of language : fate of the Neandertals revisited / Richard G. Milo and Duane Quiatt -- The biology of language / Harvey B. Sarles -- A possibility of quantum evolution of language / Włodzimierz Sedlak -- Biological and cultural factors in the evolution of language / David Smillie.