Publication Date
| In 2025 | 0 |
| Since 2024 | 0 |
| Since 2021 (last 5 years) | 0 |
| Since 2016 (last 10 years) | 0 |
| Since 2006 (last 20 years) | 1 |
Descriptor
| Behavior Problems | 1 |
| Evaluation | 1 |
| Item Response Theory | 1 |
| Mathematics Instruction | 1 |
| Measurement | 1 |
| Models | 1 |
| Science Instruction | 1 |
| Scores | 1 |
| Social Studies | 1 |
| Test Items | 1 |
Source
| Applied Psychological… | 1 |
Author
| Michaelides, Michalis P. | 1 |
Publication Type
| Journal Articles | 1 |
| Reports - Descriptive | 1 |
Audience
Location
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Peer reviewed
Direct linkMichaelides, Michalis P. – Applied Psychological Measurement, 2010
The delta-plot method (Angoff, 1972) is a graphical technique used in the context of test equating for identifying common items with aberrant changes in their item difficulties across administrations or alternate forms. This brief research report explores the effects on equated aggregate scores when delta-plot outliers are either retained in or…
Descriptors: Test Items, Behavior Problems, Measurement, Mathematics Instruction
