Descriptor
Source
Author
| Ackerman, Terry A. | 3 |
| Evans, John A. | 2 |
| Reckase, Mark D. | 1 |
Publication Type
| Speeches/Meeting Papers | 3 |
| Reports - Evaluative | 2 |
| Reports - Research | 1 |
Education Level
Audience
| Researchers | 1 |
Location
Laws, Policies, & Programs
Assessments and Surveys
| ACT Assessment | 1 |
What Works Clearinghouse Rating
Download full textAckerman, Terry A.; Evans, John A. – 1993
A didactic example is provided, using a Monte Carlo method, of how differential item functioning (DIF) can be eliminated (and thus better understood) when the complete latent space is used. The main source of DIF is that the matching single criterion used in some DIF procedures, Mantel Haenszel or Simultaneous Item Bias (SIBTEST), does not account…
Descriptors: Computer Simulation, Equations (Mathematics), Item Bias, Item Response Theory
Ackerman, Terry A.; Evans, John A. – 1992
The relationship between levels of reliability and the power of two bias and differential item functioning (DIF) detection methods is examined. Both methods, the Mantel-Haenszel (MH) procedure of P. W. Holland and D. T. Thayer (1988) and the Simultaneous Item Bias (SIB) procedure of R. Shealy and W. Stout (1991), use examinees' raw scores as a…
Descriptors: Comparative Analysis, Equations (Mathematics), Error of Measurement, Item Bias
Reckase, Mark D.; Ackerman, Terry A. – 1986
This paper demonstrates the relationship between the concept of unidimensionality and direction of an item in a multidimensional space. The basic premise is that if items that measure in the same direction are combined to form a test, that test will meet the item response theory requirements of unidimensionality. This will be true even if the…
Descriptors: Achievement Tests, College Entrance Examinations, Estimation (Mathematics), Goodness of Fit
