Walk through the circles of scientific hell and the way out of it

Recent research has shown that a lot of research in the field of psychology and other sciences is poorly reproducible. We will talk about the sins of scientists that lead to problems in science: p-hacking, publication bias, hypothesizing after the results are known, etc. We will then focus on the difference between exploratory and confirmatory approach to analysis. This is the basis for a simple method of reducing the aforementioned problems: preregistration. The practical aspects of the preregistration will be presented (how to preregister, when a classic preregistration is not possible and what to do in such cases) and current data on its effectiveness. Other ways of reducing the problem of reproducibility in science (open science, improvements in the peer review, replication culture) will also be presented briefly.