This article aims to present the methodology that was designed for the development of research competences from the educational approach of socioformation, which includes an evaluation instrument to measure the impact of these on the pedagogy students, who, every four months, develop a research project in a group form. However, the absence of methodological knowledge and content were identified because they did not carry out the necessary collaboration to comply with each project. In addition, the teachers had no idea of what competences to develop or how to evaluate them for a better group performance. For this, an investigation was initiated in two stages: in first, a documentary analysis was carried out based on certain categories of analysis that led to the identification of competences, didactic strategies, and the type of evaluation that will be used. In the second one, an analytical rubric was designed with five levels of competence, under the supervision of expert judges, which was applied to a pilot group, as well as to a sample of 250 graduate students due to the lack of university students who were carrying out research projects. And, finally, to two groups of 50 students each, of the degree to establish a comparison according to the frequency of the results and confirm the validity of the evaluation instrument. For its analysis, Cronbach's alpha was used to measure its internal consistency, the V of Aiken for the validity of the content, and a factorial analysis through the factorization extraction method of the main axes. The results show that the evaluation instrument measures the research competences in accordance with the theoretical foundations of socioformation. [ABSTRACT FROM AUTHOR]