The Usual Rule in Statistics Is That a Study Cannot

Multiple Choice

The usual rule in statistics is that a study cannot find the null hypothesis to be true-one can only reject or fails to reject the null hypothesis is simply uninformative and such studies tend not to be published. Why is this a problem in the field of psychology and other behavioral sciences?

A) Much work could be avoided if people knew what interventions had not worked.
B) This may lead to ideas being assumed as true just because a few studies found results supporting them (while many more, unreported, had not) .
C) Power and effect size considerations are getting ignored.
D) Both A and B are correct.