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We report on a concept inventory for special relativity: the developmentprocess, data analysis methods, and results from an introductory relativityclass. The Relativity Concept Inventory tests understanding of kinematicrelativistic concepts. An unusual feature is confidence testing for eachquestion. This can provide additional information; for example high confidencecorrelated with incorrect answers suggests a misconception. A novel aspect ofour data analysis is the use of Monte Carlo simulations to determine thesignificance of correlations. This approach is particularly useful for smallsample sizes, such as ours. Our results include a gender bias that was notpresent in other assessment, similar to that reported for the Force ConceptInventory.

The Relativity Concept Inventory: development, analysis and results