In this volume, leading researchers bring together current work on time perception and time-based prospective memory in order to understand how people time their intentions. This is the first account of many important topics concerning the timing of behavior, offered by scientists of diverse fields who in the past have exhibited an attitude of mutual 'benign neglect'. An explication of the rules which govern timing the future are of fundamental interest to anyone who wishes to explore the potential of human experience. Prospective memory ? especially time-based ? is a relatively unexplored way to study memory and few studies have been devoted to its neurobiological foundations. This volume aims to fill this void and will boost further interest in the field, while stimulating interdisciplinary research.