Peer reviewedERIC Number: EJ598314
Record Type: CIJE
Publication Date: 1994
Pages: N/A
Abstractor: N/A
ISBN: N/A
ISSN: ISSN-1076-9986
EISSN: N/A
Origin of the Scaling Constant "d" = 1.7 in Item Response Theory.
Camilli, Gregory
Journal of Educational and Behavioral Statistics, v19 n3 p293-95 Fall 1994
Describes the scaling constant "d" = 1.702, used in Item Response Theory, which minimizes the maximum difference between the normal and logistic distribution functions. Recapitulates the theoretical and numerical derivation of "d" given by D. Haley (1952). (SLD)
Descriptors: Item Response Theory, Scaling
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A
