The Conceptual Survey of Electricity and Magnetism: Reliability analysis and study of most frequent difficulties La prueba conceptual de electricidad y magnetismo: Análisis de confiabilidad y estudio de las dificultades más frecuentes
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© 2018 Universitat Autonoma de Barcelona. All rights reserved. The Conceptual Survey of Electricity and Magnetism (CSEM) has been widely used in the field of physics education. However, to date, no study presents a version of the test in Spanish. This article has three general objectives: 1) to present the CSEM in Spanish and analyze its reliability and discriminatory power, 2) to perform a detailed analysis of the most frequent difficulties of the students in the concepts evaluated in the test, and 3) to establish recommendations for research and instruction of these concepts. The test was implemented to 310 students who finished an Electricity and Magnetism course in a Mexican university. Researchers or physics professors from Spanish-speaking countries may use the test in Spanish that we present in the PhysPort project (physport.org); and the analysis and recommendations for instruction in this study.