ERIC Number: EJ844840
Record Type: Journal
Publication Date: 2009-Aug
Abstractor: As Provided
Reference Count: 0
Script Concordance Testing: More Cases or More Questions?
Gagnon, Robert; Charlin, Bernard; Lambert, Carole; Carriere, Benoit; Van der Vleuten, C.
Advances in Health Sciences Education, v14 n3 p367-375 Aug 2009
Script concordance test (SCT) is a case based assessment format of clinical reasoning in which questions are nested into several cases. Recent results using Q4 format suggest that nested questions contribute more to reliability of measure than cases. The present study aims at documenting variance components associated with SCT cases and nested questions and to determine what are the optimal number and combinations of cases and nested questions. Data from SCT in three different fields are presented. G study and D study methodology are used to estimate variance component and to determine optimal number and combinations of cases and questions. Questions nested into cases contributed a large amount of score variance (more than 70%). D studies with varying samples show that, depending on the reliability of the test, an optimal number of 2-4 questions nested into 15-25 cases represents the best combination. Nested questions contribute to a significant portion of score variance, with the implication that formulation of up to 5 questions per case is an efficient way to optimize the reliability of SCT scores.
Descriptors: Generalizability Theory, Evaluation Methods, Generalization, Knowledge Level, Data Analysis, Case Studies, Decision Making, Problem Solving, Cognitive Psychology
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Authoring Institution: N/A