ABSTRACT
Bridges, the guiding metaphor of this book, are structures providing a passage across gaps between two points. If we want to stay faithful to the metaphor, we cannot talk about the overlap of social psychology and other disciplines (e.g., sociology), or about the intrusion of a particular discipline into the hunting grounds of social psychology (e.g., sociobiology). The bridge metaphor is quite suitable for those cases in which there is a gap between two disciplines, but a gap that for some reason, rather than disappearing, should simply be circumvented from time to time.
