Objetivo: Conocer las representaciones previas que el alumno tiene, sobre el rol del Psicólogo Educacional, para poder indagar la influencia del dispositivo educativo “prácticum” en la constitución del rol, desde el modelo de la construcción social del conocimiento. Metodología: Se trabajó con un total de 60 alumnos cursantes de la materia Psicología Educacional de la Universidad Nacional de Mar del Plata. Se aplicaron dos encuestas una al inicio de la cursada y una segunda encuesta al finalizar la misma. Resultados: A través de las encuestas. Palabras Clave Representación Social. Practicum. Abstract THE SOCIAL REPRESENTATION OF THE EDUCATIONAL PSYCHOLOGIST IN THE STUDENTS OF THE FACULTY OF PSYCHOLOGY OF THE U.N.M.D.P. IT INFLUENCES OF ATTENDED AND THE EXPERIENCE OF THE PRACTICUM. SUMMARY: Objective: To know the representations previous that the student has, on the role of the Educational Psychologist, to be able to investigate the influence of the educative device “prácticum” in the constitution of the roll, from the model of the social construction of the knowledge. Methodology: It worked with a total of 60 students of the matter Educational Psychology of the National University of Mar del Plata. They were applied to two surveys the one at the beginning of attended and the one second survey when finalizing same one. Results: Through applied the initial and final surveys, we could give account of the changes in the concept about the role of the Educational Psychologist produced in the students of the matter Educational Psychology. Key words Social Representation. Practicum.