According to Nunnally & Bernstein, Psychometric Theory, 3/e, p. 235 K-R 20 formula is a special case of Coefficient Alpha when items are dichotomous. So you can simply use the Reliability procedure in SPSS with your scale items.
Happy computing,
Stan
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Stanley H. Cohen, PhD
Professor
Past Faculty Senate Chair, 2002-2003
Department of Psychology
West Virginia University
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>>> "R. Fusco" <
[hidden email]> 4/23/2007 2:04 PM >>>
I am trying to establish inter-rater reliability across 12 raters for 70
dichotomous items. The only test I have come across for this is Kuder
Richardson-20 (not available in SPSS). Any suggestions would be helpful.
Thank you in advance.
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