Abstract
This article presents a reconstruction of the scientific policies established in Ecuador in the years between 1979 and 2007. The purpose is double: on the one hand, it seeks to understand the process of institutionalization of the System of Science and Technology, on the other hand analysing the achievements of three scientific policies established during this period. Hence, the reconstruction is split into three stages: from 1979 to 1994 when the first scientific policy was in place; from 1994 to 2004 the second policy; and between 2005 and 2007 the third policy. To obtain the objective, some of the most relevant normative aspects during each stage are reviewed, as well as institutional statistical records related to Science and Technology.