The Effect of World War I on Naming Patterns: A Systematic Exploration

Abstract Databases of baby names are commonly available and have often been used to assess people’s reactions to events such as wars or diplomatic crises. Changes in the frequency of several candidate names are usually investigated around the event of interest. This approach misses key information simply because not all information-carrying names have been thought about. More fundamentally, whether exogenous shocks can significantly alter population-level naming preferences remains elusive. We present here a method to systematically study variations in name popularity during an event of interest and quantify its “total” effect on naming patterns. Using a nationwide database of first name frequencies since 1900, we apply the method to France during the First World War. We find several dozen first names the popularity of which was modified by the War. While we find macro-level traces of individual-level phenomena, in particular increased naming for kin, specific first names also provide key insights into the civilian population’s changing attitude – e.g., widespread pessimism in 1917. Using an individual-level database of ∼9.5 million individuals enables us to track such changes in morale month after month. The aggregate effect of the war on naming patterns was maximal and large early in the conflict, then gradually declined: the return of naming preferences to their prewar state illustrates and quantifies how the “banality of war” installed.