Testing Agreement For Multi-Item Scales With The Indices Rwg(J) And ADM(J)  

Oleh:

Cohen, Ayala ; Doveh, Etti ; Nahum-Shani, Inbal

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Organizational Research Methods vol. 12 no. 1 (Jan. 2009), page 148-164.
Topik: indices of agreement; RWG; AD; multi-item scale; significance tests
Fulltext: 148.pdf (213.31KB)

Isi artikel

The most popular index of agreement has been rWG(J); more recently, the ADM(J) index also has been used. This study addresses two problems: first, how to test the statistical signifi-cance of rWG(J) and ADM(J) and, second, how to infer from the indices that were evaluated for each group about the agreement of the ensemble of groups. The authors extend the inference based on either rWG(J) or ADM(J) by focusing on multiple-item scales and on the whole ensemble of groups. Their method is based on simulations, as was done by Dunlap, Burke, and Smith-Crowe (2003) and by Cohen, Doveh, and Eick (2001). The tests are illustrated on the data of Bliese, Halverson, and Schriesheim (2002) pertaining to a sample of 2,042 U.S Army soldiers in 49 U.S. Army companies. Software for our procedures is available both as a SAS code and in the Multilevel Modeling in R package (Bliese, 2006).

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