B – Unpublished results hide the decline effect

Schooler J. Unpublished results hide the decline effect. Nature News 2011;470(437)

Many scientifically discovered effects published in the literature seem to diminish with time. Some scientists attribute the decline effect to statistical self-correction of initially exaggerated outcomes. But to be sure of this interpretation, “negative results” – that is, experimental outcomes that were not noteworthy or consistent enough to be published – should be available. The author suggests the creation of an open access repository of research methods and all research findings – published and unpublished – which would let scientists log their hypotheses and methodologies before an experiment, and their results afterwards, regardless of outcome.