ERIC Number: EJ974596
Record Type: Journal
Publication Date: 2010
Abstractor: As Provided
Reference Count: 47
Scaling: An Items Module
Tong, Ye; Kolen, Michael J.
Educational Measurement: Issues and Practice, v29 n4 p39-48 Win 2010
"Scaling" is the process of constructing a score scale that associates numbers or other ordered indicators with the performance of examinees. Scaling typically is conducted to aid users in interpreting test results. This module describes different types of raw scores and scale scores, illustrates how to incorporate various sources of information into a score scale, and introduces vertical scaling and its related designs and methodologies as a special type of scaling. After completion of this module, the reader should be able to understand the relationship between various types of raw scores, understand the relationship between raw scores and scale scores, construct a scale with desired properties, evaluate an existing score scale, understand how content and standards information are built into a scale, and understand how vertical scales are developed and used in practice.
Descriptors: Test Results, Scaling, Measures (Individuals), Raw Scores, Educational Assessment, Test Construction, Federal Legislation, Item Response Theory, Error of Measurement, Data Collection, Test Reliability, Accuracy
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: Elementary Secondary Education
Authoring Institution: N/A
Identifiers - Laws, Policies, & Programs: No Child Left Behind Act 2001
Identifiers - Assessments and Surveys: Iowa Tests of Basic Skills; Iowa Tests of Educational Development; National Assessment of Educational Progress