[Validate an instrument constructed to assess mentorship assessment in master programs]. / Construcción y validación de un instrumento para evaluar la labor docente de asesoría en programas de maestría en el área de la salud.

BACKGROUND: The mentorship assessment is important to the students. There is not an instrument that evaluates the professors' skills to assess students. Our objective was to build and validate an instrument to evaluate the teaching labor on assessment of Master's degree (MD) students in Education and to compare with other programs of MD. METHODS: Construct and validate an instrument to evaluate mentorship assessment (EMA) was carried out. It was answered by the students to evaluate their own teachers in four programs of MD. The instrument measure four indicators: opening, disposition, respect and expertise with a total of 50 items. RESULTS: The global scoring obtained in EMA didn't point out the statistical significant differences among the different programs of MD with the Kruskal-Wallis test, however statistical significant differences were found with chi(2) p < 0.05 when compared each program in favor of the MD in education. CONCLUSIONS: The instrument EMA showed validity and consistency.