David Reher

About David Reher

David Reher is currently Professor at the School of Political Science and Sociology of the Universidad Complutense de Madrid and Director of the Population and Society Research Group [Grupo de Estudios Población y Sociedad – GEPS]. He has degrees from Santa Clara University, California State University, Northridge, and the University of Madrid. Professor Reher has held positions both in Spanish and in international scientific organizations, most notably as Chair of the Historical Demography Committee of the International Union for the Scientific Study of Population (IUSSP). He has been on the Editorial Board of the journals Continuity and Change, the Revista de Historia Economica, Historical Methods, the Revista de Demografía Histórica, and Statistica. His is also a founding member and former President of the Asociacion de Demografia Historica (ADEH).

Fertility Booms and Busts During the Twentieth Century and Their Importance for the Process of Ageing

As the developed world hunkers down for the long winter of ageing it may be instructive to reflect on just how we arrived at this particular juncture of world population history and how the recent past is likely to mark future developments in this process. In many ways, the twentieth century was unique with respect to the timing and intensity of population trends. During this period, there was a very clear boom and bust cycle of fertility. The starting point for this great cycle can be found during the 1930s when in many, but not all, developed nations fertility was already quite low, often near or even below levels considered necessary for population replacement (Total Fertility Rate (TFR) = 2.1).

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