Research with regard to changes in partnership formation has been hampered by a lack of comparative data. The Family and Fertilify Stirveys (FFS) programme ofthe 1990s provided evidence from eight countries ofthe region, but due to the timing of data collection, (in the majorify of Eastem European countries, the surveys were completed by 1995), a detailed analysis of the emerging pattems had to be postponed until the following round of comparative surveys. These were undertaken in the mid-2000s within the framework ofthe Generations and Gender (GGS) programme, and in recent years, an increasing number of studies, of individual countries as well as comparative, have examined trends in partnership formation in the region (