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Detección de patrones aberrantes en pruebas tipo test: Una aplicación en el Grado en Psicología de la Universidad de Barcelona

Multiple-choice tests are a common practice in the university setting. Incoherent response patterns, known as Aberrant Response Patterns (ARP), appear when correct and incorrect responses to items do not follow the expected pattern, i.e., correctly answering the easiest items and failing the most difficult ones. This study aims to identify ARP in a multiple-choice test of the subject Psychometrics of the Degree in Psychology at the University of Barcelona. A total of 214 students enrolled during the 2018-2019 academic year responded to a 20-item test. Four detection indices were computed, and 13 ARP were identified, with more presence in students with a higher academic level. The detection of ARP should contribute to the improvement of the evaluation systems and the learning process of students.