|Date: ||Wed, 30 Jul 2003 10:22:56 -0400|
|Sender: ||"SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>|
|From: ||"Arthur J. Kendall" <Art@DrKendall.org>|
|Organization: ||Social Research Consultants|
|Subject: ||Re: Test for Local Indepdendence|
|Content-Type: ||text/plain; charset=us-ascii; format=flowed|
Please give a more detailed explanation of what you are trying to do.
I have seen an idea about the format of items not forcing dependence
when writing items, e.g., Who was Jack's friend? [Mary, Jill] What is
her chore? [Fetch water, shepherding]. So that responding Mary and
shepherding results in two wrong answer even though Mary had a little lamb.
Are you trying to get a correlation matrix among dichotomous items after
partialling out the total items correct? like the following syntax?
compute readscor = sum(item01 to item10).
Partial Corr variables = item01 to item10 by readscor.
Hope this helps.
Social Research Consultants
University Park, MD USA
Jude Cosgrove wrote:
> I would like if possible to carry out tests of local independence
> between pairs of reading test items (i.e., the probability of getting a
> correct response on one item should be independent of a correct response
> on another item within a passage). The only method that I have found so
> far is cumbersome in that it involves no less than three test item
> analysis software packages. There is a test which computes the
> correlation between residuals of pairs of items but again after a search
> on SPSS home page I cannot find anything that appears to be analagous to
> Has anyone carried out such a test in SPSS?
> Thanks in adavance.
> Jude Cosgrove
> Research Associate
> Educational Research Centre
> Dublin 9
> Ph +353 1 837 3789
> Fax +353 1 837 8997