Date: Wed, 3 May 2000 15:18:22 -0700
Sender: "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From: Dale Glaser <glaser@PACIFIC-SCIENCE.COM>
Subject: Re: Alpha for dichotomous variables
I've computed by hand the Kuder-Richardson 20 (KR-20) for a cluster of
items, and when compared to the coefficient alpha from the SPSS output,
they're virtually the same, so I haven't had any problems with using the
reliability procedure in SPSS for dichotomous items......however, other's
may have different opinions!!.........dale glaser
From: SPSSX(r) Discussion [mailto:SPSSX-L@LISTSERV.UGA.EDU]On Behalf Of
Sent: Wednesday, May 03, 2000 2:57 PM
Subject: Alpha for dichotomous variables
I'd like to assess the internal consistency of scale made of dichotomous
variables (yes / no),
ans I was wondering if the alpha statistic as computed in "Reliability"
was appropriate for the purpose.
Is it outright inappropriate, somewhat appropriate (why), or totally
Would there be a better test for the purpose ?
And if the scale contains dichotomous and Likert scales ... ?
Thank you very much for your comments.
U. of Montreal