Overcoming the effects of differential skewness of test items in scale construction.

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dc.contributor.author Schepers, J.M.
dc.date.accessioned 2008-10-14T08:44:07Z
dc.date.available 2008-10-14T08:44:07Z
dc.date.issued 2004
dc.identifier.citation 30(4), 27-43. en
dc.identifier.uri http://hdl.handle.net/10210/1167
dc.description.abstract The principal objective of the study was to develop a procedure for overcoming the effects of differential skewness of test items in scale construction. It was shown that the degree of skewness of test items places an upper limit on the correlations between the items, regardless of the contents of the items. If the items are ordered in terms of skewness the resulting intercorrelation matrix forms a simplex or a pseudo simplex. Factoring such a matrix results in a multiplicity of factors, most of which are artefacts. A procedure for overcoming this problem was demonstrated with items from the Locus of Control Inventory (Schepers, 1995). The analyses were based on a sample of 1662 firstyear university students. en
dc.language.iso en en
dc.publisher Special edition of SA Journal of Industrial Psychology en
dc.rights Complies with the rights as specified by the publisher: http://www.sajip.co.za/ & Copyright University of Johannesburg en
dc.subject Differential skewness en
dc.subject Scale construction en
dc.subject Test terms en
dc.subject Simplex en
dc.subject Pseudo simplex en
dc.title Overcoming the effects of differential skewness of test items in scale construction. en
dc.type Article en

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