The current study was designed to extend the current literature to study scale drift in CAT as part of improving quality control and calibration process for ACCUPLACER, a battery of large-scale adaptive placement tests. The study aims to evaluate item parameter drift using empirical data that span four years from the ACCUPLACER Arithmetic assessment. The results suggest that the Arithmetic test maintained a reasonably stable scale in the years 2004 through 2007. The following is appended: Summary Statistics of Item Exposure Rates across Years.
Authors
- Authorizing Institution
- College Board
- Peer Reviewed
- F
- Publication Type
- Reports - Research
- Published in
- United States of America
Table of Contents
- An Investigation of Scale Drift for Arithmetic Assessment of ACCUPLACER 1
- An Investigation of Scale Drift for Arithmetic Assessment of ACCUPLACER 2
- Objectives of Inquiry and Theoretical Background 5
- Method 5
- Data Source 5
- Calibration 6
- Empirical Evaluation of Item Parameter Drift 6
- Results 7
- Discussion 9
- References 10
- Appendix 11
