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Peer reviewed Peer reviewed
ERIC Number: EJ560284
Record Type: Journal
Publication Date: 1997
Pages: N/A
Abstractor: N/A
ISBN: N/A
ISSN: ISSN-0033-3123
EISSN: N/A
Item Information and Discrimination Functions for Trinary PCM Items.
Akkermans, Wies; Muraki, Eiji
Psychometrika, v62 n4 p569-78 Dec 1997
For trinary partial credit items, the shape of the item information and item discrimination functions is examined in relation to the item parameters. Conditions under which these functions are unimodal and bimodal are discussed, and the locations and values of maxima are derived. Practical relevance of the results is discussed. (SLD)
Descriptors: Functions (Mathematics), Mathematical Models, Psychometrics, Test Items
Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A