Using a quasi-experimental impact evaluation, this thesis explores the impact of Juntos, a conditional cash transfer program from Peru, on consumption and utilization of basic health services for children and women in childbearing age, and on schooling attendance. In this thesis, I use instrumental variable techniques to measure the effect of the program in 2007 and 2011. Using annual data from the National Household Survey (ENAHO) of the National Institute of Statistics (INEI), I explore whether the effect of the program changed in intensity over time. These findings suggest that there were positive significant impacts on the outcomes of interest for 2007. However, the effects were more limited in intensity or significance when assessing the program for 2011.