This thesis examines the long-term effects of the Kangaroo Mother Care (KMC) program. It is based on data from a Randomized Controlled Trial (RCT) conducted in Bogota, Colombia, from 1993 to 1994 and Follow-up data at 20 years old. The study aims to demonstrate that early childhood interventions such as KMC can result in higher wages in adulthood by a mediation analysis, including aggressive behavior and university enrollment. Structural equation model results showed that participants who received KMC reported lower externalized behavior scores and were more likely to attain a university education. This research emphasizes the importance of supporting early childhood interventions for long-term educational benefits.