from the coin-toss-1-coin-toss-2-coin-toss-3 dept.
Shipud writes "Holland was recently in the news when a psychology professor in Tilburg University was found to have committed large-scale fraud over several years. Now, another Dutch psychologist is suggesting a way to avert these sort of problems, namely by 'sharing early and sharing often,' since fraud may start with small indiscretions due to career-related pressure to publish. In Wilchert's study, he requested raw data from the authors of some 49 papers. He found that the authors' reluctance to share data was associated with 'more errors in the reporting of statistical results and with relatively weaker evidence (against the null hypothesis). The documented errors are arguably the tip of the iceberg of potential errors and biases in statistical analyses and the reporting of statistical results. It is rather disconcerting that roughly 50% of published papers in psychology contain reporting errors and that the unwillingness to share data was most pronounced when the errors concerned statistical significance.'"