ERIC Number: ED194562
Record Type: RIE
Publication Date: 1979-Apr
Reference Count: 0
A Process for Testing a Mathematical Model for the Solution of a Practical Problem: Application to Test Equating. LES Paper on Learning and Teaching. Paper #79.
Douglass, James B.
A general process for testing the feasibility of applying alternative mathematical or statistical models to the solution of a practical problem is presented and flowcharted. The system is used to develop a plan to compare models for test equating. The five alternative models to be considered for equating are: (1) anchor test equating using classical test theory; (2) anchor test equating using the one-parameter logistic model; (3) anchor test equating using the three-parameter logistic model; (4) preequating using the one-parameter logistic model; and (5) preequating using the three-parameter logistic model. Sources of estimation instability are identified for the logistic models. Various practical and theoretical problems associated with the general process and test equating are discussed. The equating problem is of interest in its own right and serves to explicate the general process. (Author/RL)
Publication Type: Reports - Research
Education Level: N/A
Authoring Institution: N/A
Identifiers: Anchor Test Study; Classical Test Theory; Estimation; One Parameter Model; Test Equivalence; Three Parameter Model
Note: Paper presented at the Annual Meeting of the American Educational Research Association (63rd, San Francisco, California, April 8-12, 1979).