Compared to European Fertility Transition (EFC), Latin America Fertility Transition (LAFT) presented characteristics that made it unique. First of all, fertility’s decline was rapid and in a short time. Second of all, parity control adoption was very effective. In other words, women in advanced age groups of the reproductive interval were reducing their final parities. Several studies along the past years enumerated remarkable factors about the short-term fertility decline in Latin America countries. Transformations in social and economic structures contributed to change some values among women. Increase in urbanization, migration from rural to urban centers, women’s participation in the labor market, and the rise of educational attainment have been impacting women’s decisions about childbirth timing and the desired number of children. Also, the spread of modern contraceptives coincides with the fertility decline due to diffusion, development, and distribution of them (Martin and Juarez 1995, Guzmán et al. (1996), Parrado (2000); Chackiel and Schkolnik (2003); Wong (2009), Rosero-Bixby, Castro-Martín, and Martín-García (2009), Casterline and Odden (2016),Lima et al. (2018). Face all those transformations, we expect that younger cohorts behave different than older cohorts. As a tentative of inovation, we intend to analyze synthetic cohorts under observed and adjusted fertility schedules for seven countries in Latin America. With all data available we also aim to predict the behavior of women who have not finished their reproductive life yet.