The number of publications concerned with research and practice in the field that has come to be known as peace psychology has been growing rapidly and there are some landmark volumes (which the present work does not in any way replace!), displaying many of the major theoretical and practical contributions – as noted in the Introduction to this book. No prior work that we know of, though, provides a comprehensive review with a usable taxonomy of all of the relevant post-Cold War research. We certainly cannot pretend that the present work cites, much less integrates, all of the applicable research – as will be evident from the analysis and figures in the Introduction. We have, however, done our best to fill the need.