What's Wrong with the H-Index, According to Its Inventor
Love it or hate it, the H-index has become one of the most widely used metrics in academia for measuring the productivity and impact of researchers. But when Jorge Hirsch proposed it as an objective measure of scientific achievement in 2005, he didn’t think it would be used outside theoretical physics.
The public call for rapid sharing of research data relevant to the COVID-19 outbreak is driving an unprecedented surge in (unrefereed) preprints. To help pinpoint the most important research, Nature launched Outbreak Science Rapid PREreview, an open-source platform for rapid review of preprints related to emerging outbreaks.
"TOP Factor" Rates Journals on Transparency, Openness
A new tool, created by the advocacy organization Center for Open Science, seeks to change editorial practices. Journals are scored based on ten different criteria, including availability of data and policies on preregistration.
Comparing Meta-analyses and Preregistered Multiple-laboratory Replication Projects
Kvarven, Strømland and Johannesson compare meta-analyses to multiple-laboratory replication projects and find that meta-analyses overestimate effect sizes by a factor of almost three. Commonly used methods of adjusting for publication bias do not substantively improve results.