Jorge Vivas

Evaluación de las redes semánticas de conceptos académicos en estudiantes universitarios

The Extended Theory of the Propagation of the Activation is one of the more accepted models to represent the information stored in the long term memory. In this model isolated concepts do not have meaning but they acquire it by their relation with the others. The aim of this paper is to communicate the results of an experience in which it was applied a method to estimate the semantic distances (Distsem) between nine concepts of the subject cognitive psychology in three instances, individual initial, group and individual final. The participants were 225 students from third year of the career of psychology (National University of Mar del Plata) that were taking the course of cognitive psychology. Subjects were asked to estimate the proximity between random pairs of concepts and then it was

MODELO PARA OBTENER EL PERFIL COGNITIVO DEL ESTUDIANTE DE INGENIERIA BASADO EN LOGICA DIFUSA

The learners´ knowledge is constantly changingduring the learning process and therefore not easy to becertain about their cognitive abilities at a given time.Consequently, the capture of the student´s knowledge level(dynamic and multi-valued) requires specific procedures.Teachers use several methods to obtain the student´scognitive diagnosis. Fuzzy logic techniques have been usedto improve the performance of evaluation systems due totheir ability to handle imprecise information. A method thatincludes fuzzy logic procedures is presented. Theinformation analyzed has been obtained from regularcourses of engineering specialties at UNMDP. Threelinguistic variables are analyzed: ‘student´s gradesprogression’, ‘tests result level’ and ‘mark in relation tomean group mark’. A ‘knowledge level’ value is obtainedapplying fuzzy logic rules to previously mentioned variables.Index Termsxa0⎯ engineering student, fuzzy logic, knowledgeprofile.