AbstractRein Detlev B. ? German attitudes to demographic developments. In the summer of 1980 the Federal Minister of the Interior published the first part of a report dealing with population in the Federal German Republic. This paper is based on the results provided in this report and in a number of other recent publications. It deals with political attitudes to population problems, demographic developments in Germany during the past hundred years with particular emphasis on the number of births and marriages, the reasons for the decline in the birth rate and with models of future population growth. It is clear that recent movements in the birth rate have not resulted from any measures of population policy, but are part of the secular trend of falling family size in the context of modernization which has continued for the last hundred years.