R-Index: A Metric for Assessing Researcher Contributions to Peer Review

I propose the R-Index, defined as the difference between the sum of review responsibilities for a researcher's publications and the number of reviews they have completed, as a novel metric to effectively characterize a researcher's contribution to the peer review process. This index aims to balance the demands placed on the peer review system by a researcher's publication output with their engagement in reviewing others' work, providing a measure of whether they are giving back to the academic community commensurately with their own publication demands. The R-Index offers a straightforward and fair approach to encourage equitable participation in peer review, thereby supporting the sustainability and efficiency of the scholarly publishing process.