Introduction / Katja Liebal, Cornelia Müller, and Simone Pika -- The syntactic motor system / Alice C. Roy and Michael A. Arbib -- The gestural communication of apes / Simone Pika [and others] -- Gestural communication in three species of macaques (Macaca mulatta, M. nemestrina, M. arctoides): use of signals in relation to dominance and social context / Dario Maestripieri -- Multimodal concomitants of manual gesture by chimpanzees (Pan troglodytes): influence of food size and distance / David Leavens and William Hopkins -- Requesting gestures in captive monkeys and apes: conditioned responses or referential behaviours? / Juan Carlos Gómez -- Cross-fostered chimpanzees modulate signs of American Sign Language / Valerie J. Chalcraft and R. Allen Gardner -- Human twelve-month-olds point cooperatively to share interest with and helpfully provide information for a communicative partner / Ulf Liszkowski -- From action to language through gesture: a longitudinal perspective / Olga Capirici [and others] -- The link (and differences) between deixis and symbols in children's early gestural-vocal system / Elena Pizzuto and Micaela Capobianco -- A cross-cultural comparison of communicative gestures in human infants during the transition to language / Joanna Blake [and others] -- How does linguistic framing of events co-speech gestures? Insights from crosslinguistic variations and similarities / Asli Özyürek [and others] -- The two faces of gesture: language and thought / Susan Goldin-Meadow -- Gestures in human and nonhuman primates: why we need a comparative view / Cornelia Müller.