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Statistics of Deadly Quarrels, 1809-1949 (ICPSR 5407)

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This study contains data on 779 dyadic fatal quarrels for the period 1809-1949. The study represents one of the earlier attempts at quantification of historical conflict behavior. A dyadic deadly quarrel is a situation involving a pair of opponents or belligerents which causes death to humans. Each quarrel is identified by its beginning date and magnitude. The magnitude of a quarrel is measured by the logarithm to the base 10 of the number of deaths. The range of magnitude of quarrels in this study is from 2.50 to 7.50, the latter representing the figure for nations involved in World War II. For each quarrel, the nominal variables include the type of quarrel, as well as political, cultural, and economic similarities and dissimilarities between the pair of combatants.

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Study Description


Richardson, Lewis Fry. STATISTICS OF DEADLY QUARRELS, 1809-1949. ICPSR05407-v1. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [producer and distributor], 196?. http://doi.org/10.3886/ICPSR05407.v1

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Scope of Study

Subject Terms:   aggression, conflict, international affairs, nations, nineteenth century, twentieth century, violence, war

Geographic Coverage:   Global

Time Period:  

  • 1809--1949

Universe:   A total of 779 dyadic, fatal quarrels in the period 1809-1949.

Data Types:   event/transaction, and aggregate data



Original ICPSR Release:  

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