Volume 53, numéro 7 Vol. 53, 1998/HS1 - pagesPages 1 à 9New methodological approaches in the social sciences. An overviewPar Daniel CourgeauPages 11 à 38Event history analysis of groups. The findings of an on-going research projectPar Xavier Bry, Catherine Bonvalet, Éva LelièvrePages 39 à 71Multilevel analysis in the social sciencesPar Brigitte Baccaïni, Daniel CourgeauPages 73 à 95Textual statistics. An exploratory tool for the social sciencesPar France Guérin-PacePages 97 à 136Microsimulation methods for population projectionPar Wendy Post, Evert Van ImhoffPages 139 à 150Nonlinear demographic models and chaotic demo-dynamicsPar Didier BlanchetPages 151 à 179Games, equilibria and population regulation under viability constraints: An interpretation of the work of the anthropologist Fredrik BarthPar Noël BonneuilPages 181 à 204Evidence for a spatial diffusion of contraception at the onset of the fertility transition in victorian BritainPar Lucienne Jakobi, Jean-Pierre Bocquet-AppelPages 205 à 240The fractal approach. A new tool for the spatial analysis of urban agglomerationsPar Pierre Frankhauser