Article,
Come again? : a surprisingly simple test to check research papers for errors
The Economist, (June 2016)
Abstract
“HOW extremely stupid not to have thought of that!” Many statisticians, confronted with the GRIM test might find themselves echoing Thomas Huxley’s words when he read about the idea of natural selection. The GRIM test, short for granularity-related inconsistency of means, is a simple way of checking whether the results of small studies of the sort beloved of psychologists (those with fewer than 100 participants) could be correct, even in principle. It has just been posted in PeerJ Preprints by Nicholas Brown of the University Medical Centre Groningen, in the Netherlands, and James Heathers of Poznan University of Medical Sciences, in Poland.
