A psychometric evaluation of the colorado learning attitudes about science survey for use in chemistry

• Autores: Keily Heredia, Jennifer E. Lewis
• Localización: Journal of chemical education, ISSN 0021-9584, Vol. 89, Nº 4, 2012, págs. 436-441
• Idioma: inglés
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• Resumen

  • The purpose of this paper is to evaluate the psychometric properties of The Colorado Learning Attitudes about Science Survey (CLASS). The 50-item instrument was administered to 311 college students from a public institution in the United States enrolled in General Chemistry I Laboratory. Confirmatory factor analysis and Cronbach's estimates were used to examine the reliability and validity of the CLASS instrument scores. Detailed information regarding this process is discussed. Initial results revealed a lack of evidence for simultaneous measurement of all of the constructs underlying the nine CLASS subscales. However, further work, including the administration of two small, single-scale instruments taken directly from CLASS, suggests that concise, easy-to-administer measures of individual constructs can be derived from CLASS.