Stephen Mark Humphry
Biographic Data
| ID | 5741973 |
|---|---|
| NAME | Stephen Mark Humphry |
| GIVEN NAMES | Stephen Mark |
| FAMILY NAME | Humphry |
| SIGNATURE | HUMPHRY S M |
| AFFILIATIONS | The University of Western Australia, Crawley, WA |
| VERIFIED | No |
| TOTAL WORKS | 2 |
| TOTAL CITATIONS | 1 |
| AUTHOR COUNT | 2 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2014 |
| LATEST PUBLICATION YEAR | 2016 |
| H-INDEX | 1 |
Controlling Guessing Bias in the Dichotomous Rasch Model Applied to a Large-Scale, Vertically Scaled Testing Program
Recent research has shown how the statistical bias in Rasch model difficulty estimates induced by guessing in multiple-choice items can be eliminated. Using vertical scaling of a high-profile national reading test, it is shown that the dominant effect of removing such bias is a nonlinear change in the unit of scale across the continuum. The consequence is that the proficiencies of the more proficient students are increased relative to those of th…
Common Structural Design Features of Rubrics May Represent a Threat to Validity
Rubrics for assessing student performance are often seen as providing rich information about complex skills. Despite their widespread usage, however, little empirical research has focused on whether it is possible for rubrics to validly meet their intended purposes. The authors examine a rubric used to assess students’ writing in a large-scale testing program. They present empirical evidence for the existence of a potentially widespread threat to…
Common Structural Design Features of Rubrics May Represent a Threat to Validity
Rubrics for assessing student performance are often seen as providing rich information about complex skills. Despite their widespread usage, however, little empirical research has focused on whether it is possible for rubrics to validly meet their intended purposes. The authors examine a rubric used to assess students’ writing in a large-scale testing program. They present empirical evidence for the existence of a potentially widespread threat to…
Common Structural Design Features of Rubrics May Represent a Threat to Validity
Rubrics for assessing student performance are often seen as providing rich information about complex skills. Despite their widespread usage, however, little empirical research has focused on whether it is possible for rubrics to validly meet their intended purposes. The authors examine a rubric used to assess students’ writing in a large-scale testing program. They present empirical evidence for the existence of a potentially widespread threat to…
Controlling Guessing Bias in the Dichotomous Rasch Model Applied to a Large-Scale, Vertically Scaled Testing Program
Recent research has shown how the statistical bias in Rasch model difficulty estimates induced by guessing in multiple-choice items can be eliminated. Using vertical scaling of a high-profile national reading test, it is shown that the dominant effect of removing such bias is a nonlinear change in the unit of scale across the continuum. The consequence is that the proficiencies of the more proficient students are increased relative to those of th…
Mathematics (2 works) · Psychology (2 works) · Psychometric Methodologies and Testing (2 works) · Statistics (2 works) · Advanced Statistical Methods and Models (1 works) · Computer Science (1 works) · Developmental psychology (1 works) · Econometrics (1 works) · Empirical research (1 works) · Evaluation of Teaching Practices (1 works)