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Direct linkLyniesha Ward; Fridah Rotich; Jeffrey R. Raker; Regis Komperda; Sachin Nedungadi; Maia Popova – Chemistry Education Research and Practice, 2025
This paper describes the design and evaluation of the Organic chemistry Representational Competence Assessment (ORCA). Grounded in Kozma and Russell's representational competence framework, the ORCA measures the learner's ability to "interpret," "translate," and "use" six commonly used representations of molecular…
Descriptors: Organic Chemistry, Science Tests, Test Construction, Student Evaluation
Heredia, Keily; Lewis, Jennifer E. – Journal of Chemical Education, 2012
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 [alpha]…
Descriptors: Factor Analysis, Evidence, Chemistry, Psychometrics
