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Direct linkRetief, Liezel; Potgieter, Marietjie; Lutz, Marietjie – African Journal of Research in Mathematics, Science and Technology Education, 2013
In this paper the use of the Rasch model is explored as a transparent, systematic and theoretically underpinned response to quality issues that are widely recognised as problematic in the refinement of Likert scale questionnaires. Key issues are the choice of length of scale, the pursuit of a favourable estimate of Cronbach's alpha at the possible…
Descriptors: Item Response Theory, Test Construction, Likert Scales, Questionnaires
