|authors ||Landsheer, J.A.; Boeije, H.R.|
|source ||Quality & Quantity, Volume: 44, Issue: 1 (2010), pp. 59-69|
|full text ||The full text of this item is not available due to the copyrights policy of the publisher.
|publisher ||Springer Science|
|URL publisher ||[Website publisher]|
|document type ||Article|
|version ||Publisher version|
|disciplines ||Methodenleer en Statistiek|
|abstract ||In this paper, two scales are examined for the measurement of self-regulation.
The item content is evaluated for its specific usefulness for measuring self-regulation of obesity
patients. Qualitative facet analysis (QFA), an application of Guttmann’s Facet Theory, is
used to investigate whether item content sufficiently covers the intended content area. This
form of content analysis constitutes a systematic, effective and critical tool for improving the
content validity of questionnaires. It discovers topics that are underrepresented or overrepresented.
The method offers away to clarify the relationship between concrete item phrases and
the desired content as defined by construct and theory. It allows the researcher to improve his
or her understanding of the items as a stimulus and of the similarities of items, and allows the
formulation of a possible structure for confirmative factor analysis. Various ways to improve
the content of both scales are identified.|
|keywords ||health research, content validity, facet analysis, qualitative methods, questionnaires, obesitas|