ERIC Number: ED409357
Record Type: Non-Journal
Publication Date: 1997-Mar
Reference Count: N/A
Making Use of Response Times in Standardized Tests: Are Accuracy and Speed Measuring the Same Thing?
Scrams, David J.; Schnipke, Deborah L.
Response accuracy and response speed provide separate measures of performance. Psychometricians have tended to focus on accuracy with the goal of characterizing examinees on the basis of their ability to respond correctly to items from a given content domain. With the advent of computerized testing, response times can now be recorded unobtrusively during operational tests, and this new source of data may provide additional information about examinees. D. Thissen (1983) offered an extension of item response theory that accounts for both accuracy and speed within a single model. Thissen's Timed-Testing model is used in this study as a framework for exploring the relationship between accuracy and speed in three large-scale computerized tests. Data are from computer-administered tests of verbal, quantitative, and reasoning skills involving about 7,000 examinees. Overall relative item easiness accounted for only a small proportion of variability in response times, and neither examinee ability nor item difficulty performed much better. Results are discussed in terms of speededness and the possibility of incorporating speed factors into ability estimation. (Contains 5 figures and 11 references.) (Author/SLD)
Publication Type: Reports - Evaluative; Speeches/Meeting Papers
Education Level: N/A
Authoring Institution: N/A