[Rasch] Validating Scale with item responses coming from different respondent groups

Juanito Talili talilij at yahoo.com
Wed Apr 8 10:38:03 EST 2009


Hi all,
 
A scale consists of six subscales.  Each subscale has 15 items.  The entire scale requires three types of respondents (students, parents, and teachers) such that for each subscale the respondents for the first first five items (items 1-5) are students; for the next 5 items (items 6-10) are teachers; and the last five items(items 11-15) are parents.  This means that the teachers, students and parents are complementary respondents in order to measure each subscale.  How to Rasch analysis this kind of scale?.
 
Juanito


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