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Citation Information

Type Conference Paper - International Invitational Educational Policy Research Conference, Paris, France, 2005
Title An analysis of different psychometric treatments of item nonresponse in the SACMEQ Reading test
Author(s)
City Paris
Country/State France
Abstract
This analyses the effects of unplanned item nonresponse on the measurement of student ability in large scale educational achievement studies. It explores variations in student and national ability estimate distributions as a result of different psychometric treatments of nonresponse. A range of replicated analyses are presented using data collected from the crossnational SACMEQ study of Reading achievement. The relative merits of these treatments are summarised in conclusion, and implications for normative and methodological research and practice are considered. It is suggested that environmental and psychological antecedents of nonresponse need to be determined and that related variables be considered during the production of individual and national estimates of achievement.

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