Item analysis syntax

[Paul Ginns-2]

Hi everyone,

I thought this article might be of use to many on the list:

CTTITEM: SAS macro and SPSS syntax for classical item analysis
Pui-Wa Lei, Qiong Wu. Behavior Research Methods. Austin: Aug 2007. Vol. 39, Iss. 3; pg. 527, 4 pgs

Abstract (Summary)
This article describes the functions of a SAS macro and an SPSS syntax that produce common statistics for conventional item analysis including Cronbach's alpha, item difficulty index (p-value or item mean), and item discrimination indices (D-index, point biserial and biserial correlations for dichotomous items and item-total correlation for polytomous items). These programs represent an improvement over the existing SAS and SPSS item analysis routines in terms of completeness and user-friendliness. To promote routine evaluations of item qualities in instrument development of any scale, the programs are available at no charge for interested users. The program codes along with a brief user's manual that contains instructions and examples are downloadable from suen.ed.psu.edu/~pwlei/plei.htm. [PUBLICATION ABSTRACT]

Cheers,

Paul

Dr. Paul Ginns
Lecturer in Educational Psychology
Faculty of Education and Social Work
A35 - Education Building
The University of Sydney
NSW 2006 Australia

Phone: [phone]
Fax: [phone]
E-Mail: [hidden email]

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