In 2500 words or less, use notions of strategic behavior, psychological or social mechanisms, and pseudo-experimental design (as appropriate) to explain and evaluate the explanatory contributions in two of the following: Goldhagen versus Browning; Davidson and Grofman; Putnam. Briefly outline what theoretical issues are at stake, describe the approach used to engage the issues empirically, and evaluate the strengths and weaknesses of the resulting empirical analysis.