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The Importance of Choosing One Good Item for Single-Item Measures and Its Generalization to All Measures
Stockholm University, Faculty of Social Sciences, Department of Advertising and Public Relations.
2009 (English)In: Transfer - Werbeforschung & Praxis, ISSN 1436-798X, Vol. 55, no 2, 8-18 p.Article in journal (Refereed) Published
Abstract [en]

This article provides a necessary complement to Bergkvist and Rossiter’s (2007) article on single-item measures. The new study tests Rossiter’s (2002) claim in his C-OAR-SE procedure for scale development that "one good item" (meaning the most content-valid item) must be chosen for the single-item measure. The study demonstrates, for measures of Attitude towards the Ad (AAd) and Attitude towards the Brand (ABrand), that predictive validity differs according to which particular single item is chosen from typical sets of multiple items used to measure these constructs. Generally, there is only one suitable item for measuring these "doubly concrete" constructs, and this item can be identified a priori by expert judgment of item content in relation to the conceptual definition of the construct. The "one good item" recommendation can be extended to the measurement of first-order components of "abstract" constructs, because first-order components must be doubly concrete. The "one good item" recommendation therefore applies to the measurement of all constructs because all measures either are, or are aggregations of, single items.     

Place, publisher, year, edition, pages
2009. Vol. 55, no 2, 8-18 p.
Keyword [en]
Attitude towards the Ad, Attitude towards the Brand, Measurement
National Category
Media and Communications
Research subject
Communication Studies
Identifiers
URN: urn:nbn:se:su:diva-79247OAI: oai:DiVA.org:su-79247DiVA: diva2:548602
Available from: 2012-08-31 Created: 2012-08-31 Last updated: 2013-01-30Bibliographically approved

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