Abstract
This work aims to determine whether there are significant differences in the investment results on innovation -specifically in the probability of innovating in products and/or processes, and on labour productivity- when distinguishing between in-house and external sources of innovation. Data from the 2012-2014 innovation survey of Ecuador was used, additionally the methodology proposed by Crépon, Duguet, and Mairesse was applied. The evidence suggests that in-house innovation makes twice as much impact when it comes to the probability of introducing innovation in products and/or processes than the external sources of innovation, which also shows a greater impact on labour productivity.