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ERIC Number: EJ788163
Record Type: Journal
Publication Date: 2008-Mar
Pages: 19
Abstractor: Author
Reference Count: 37
ISSN: ISSN-0022-0655
Modeling Judgments in the Angoff and Contrasting-Groups Method of Standard Setting
Van Nijlen, Daniel; Janssen, Rianne
Journal of Educational Measurement, v45 n1 p45-63 Mar 2008
Essential for the validity of the judgments in a standard-setting study is that they follow the implicit task assumptions. In the Angoff method, judgments are assumed to be inversely related to the difficulty of the items; contrasting-groups judgments are assumed to be positively related to the ability of the students. In the present study, judgments from both procedures were modeled with a random-effects probit regression model. The Angoff judgments showed a weaker link with the position of the items on the latent scale than the contrasting-groups judgments with the position of the students. Hence, in the specific context of the study, the contrasting-groups judgments were more aligned with the underlying assumptions of the method than the Angoff judgments.
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Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A