The former Diploma de estudios avanzados (DEA) lasted two years and candidates were required to complete coursework and demonstrate their ability to research the specific topics they have studied. From 2011 on, these courses were replaced by academic Master's programmes that include specific training on epistemology, and scientific methodology. After its completion, students are able to enroll in a specific PhD programme ("programa de doctorado") and begin a dissertation on a set topic for a maximum time of three years (full-time) and five years (part-time). All students must have a full professor as an academic advisor ("director de tesis") and a tutor, who is usually the same person.