Abstract
The objective of this article is to propose a conceptual and theoretical framework to understand the perceptions, attitudes and types of masculinities, as present aspects among the population and the adoption, or not, of the population measures in Costa Rica during the second middle of the 20th century. The construction of the proposal was made from the review of secondary bibliography. The main reflection is, despite the fact that in Costa Rica there was no policy with specific objectives to control the birth rate, there was the creation of a series of institutions with population objectives. In individual action in the face of these institutions and objectives, mediated by the context and the impulse of the State (of the entire apparatus developed between national and international institutions), gender perceptions, attitudes and roles, as well as the influence of actors like the catholic church.