Some of you might have asked themselves this question a couple of times when checking out the literature of a specific field. Imagine the following situation: You have completed your research and now you want to compare your results to research done previously. You finally found the suitable article, have the necessary effect sizes/power and can start comparing. But wait: Who actually tells you that the reported results are correct? Would you happen to notice if the results had been influenced by factors which are sometimes not even visible to the authors themselves? The probability of you detecting them, are tiny, especially as you only have certain information of how the study has been done and what elements have been removed. It is hard to digest, but most research findings, even those reported in high quality journals, are incorrect. Try to imagine the impact this situation has on your education and your research such as research in general.
In the following post I want to discuss multiple factors of why and how research results can be false and want to outline some aspects of how the situation might be improved. The main aspects are thereby retrieved from Ioannidis essay (2005). Read the rest of this entry »