We gesture while we talk and children use gestures prior to words to communicate during the first year. Later, as words become the preferred form of communication, children continue to gesture to reinforce or extend the spoken messages or even to replace them. This volume, originally published as a Special Issue of 'Gesture' 10:2/3 (2010), brings together studies from language acquisition and developmental psychology. It provides a review of common theoretical, methodological and empirical themes, and the contributions address topics such as gesture use in prelinguistic infants with a special and new focus on pointing, the relationship between gestures and lexical development in typically developing and deaf children and even how gesture can help to learn mathematics. All in all, it brings additional evidence on how gestures are related to language, communication and mind development.