• An Optimization Model for Test...

Treffer: An Optimization Model for Test Assembly To Match Observed-Score Distributions. Research Report 94-7.

Title:
An Optimization Model for Test Assembly To Match Observed-Score Distributions. Research Report 94-7.
Language:
English
Authors:
van der Linden, Wim J., Luecht, Richard M., Twente Univ., Enschede (Netherlands). Faculty of Educational Science and Technology.
Availability:
Bibliotheek, Faculty of Educational Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.
Peer Reviewed:
N
Page Count:
29
Publication Date:
1994
Document Type:
Report Reports - Evaluative
Descriptors:
Ability, Foreign Countries, Heuristics, Item Response Theory, Linear Programming, Mathematics Tests, Models, Observation, Scores, Statistical Distributions, Test Construction
Assessment and Survey Identifiers:
ACT Assessment
Entry Date:
1996
Accession Number:
ED389752
Database:
ERIC

Weitere Informationen

An optimization model is presented that allows test assemblers to control the shape of the observed-score distribution on a test for a population with a known ability distribution. An obvious application is for item response theory-based test assembly in programs where observed scores are reported and operational test forms are required to produce the same observed-score distributions as long as the population of examinees remains stable. The model belongs to the class of 0-1 linear programming models and constrains the characteristic function of the test. The model can be solved using the heuristic presented in Luecht and T. M. Hirsch (1992). An empirical example with item parameters from the ACT Assessment Program Mathematics Test illustrates the use of the model. (Contains 6 figures and 23 references.) (Author)