A key principle of the scientific method is that experiments must be reproducible. That is, an experiment has scientific validity only if another person tries the same experiment and gets the same result.
It has been coming out that a big percentage–possibly a majority of psychological and social science experiments are not reproducible. That is understandable, since human beings are active agents and so cannot be expected to be as predictable as inanimate objects.
But now scientists are discovering that a large percentage of biomedical studies are also non-reproducible! [Read more...]