Abstract
A recent article by Lindell and Brandt raised two concerns regarding the use of James, Demaree, and Wolf’s interrater agreement indices rWG and rWG(J). First, they noted that the multi-item rWG(J) equation is mathematically equivalent to inserting rWG into the Spearman-Brown prophecy formula and questioned whether applying a formula developed for a reliability index was also appropriate for an agreement index. Second, they questioned the appropriateness of James et al.’s suggestion of replacing obtained negative values of rWG with zeros. This article addresses these concerns by demonstrating that rWG(J) can be derived independently from the Spearman-Brown prophecy formula and that negative values of rWG can be avoided by reparameterizing the structural equation underlying the data when there is systematic disagreement between subgroups of raters.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
