Publication: Appraising the ANT: Psychometric and theoretical considerations of the Attention Network

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Title Appraising the ANT: Psychometric and theoretical considerations of the Attention Network
Authors/Editors* MacLeod, J. W., Lawrence, M. A., McConnell, M. M., Eskes, G. A., Klein, R. M. & Shore, D. I.
Where published* Neuropsychology
How published* Journal
Year* 2010
Volume this ms is "in press;" proofs have been returned
It has been suggested that the human attention system is subdivided into three functionally and anatomically independent networks—the alerting network, the orienting network, and the executive control network. The Attention Network Test (ANT) aims to provide a quick, easy and intuitive tool for measuring the efficiency of these three networks. The ANT, first described in 2002, has become popular in the neuropsychological literature, with some form of the task currently appearing in no less than 65 original research papers. Although several general reviews of the ANT exist, none provide an analysis of the psychometric properties. The present study analyzed the reliability, variance structure, distribution shape, and independence of the three attention network measures provided by the ANT using a multi-study approach with a large sample (N=1129) of healthy individuals. Spearman-Brown corrected split-half reliabilities of reaction time based attention network were low for the Alerting (r= .38) and Orienting (r= .55) networks, and moderate-high for the Executive network (r= .81). Both ANOVA and correlational analyses suggest that the networks measured by the ANT are not independent. In the collection, analysis and interpretation of any test data, psychometric properties, like those reported here for the ANT, must be carefully considered.
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