Work

An Alternate Definition of the Ets Delta Scale of Item Difficulty

Year: 1985

Type: article

Abstract: ABSTRACT This note develops an alternative definition of the “delta scale” of item difficulty that is used at ETS. A comparison is given with the traditional definition of the delta scale that is based on the normal distribution. Some advantages of the alternative scale are mentioned.

Source: ETS Research Report Series

DOI: 10.1002/j.2330-8516.1985.tb00128.x

Authors: Paul W. Holland, Dorothy T. Thayer

Language: English

Topic: Psychometric Methodologies and Testing

Subfield: Management Science and Operations Research

Field: Decision Sciences

Domain: Social Sciences

Open Access status: bronze

OpenAlex ID: W1963564705

FWCI: 2.561

Cites: 3

Cited by: 69

Related to: 10