Null results are, almost by definition, easier to find that statistically significant ones. What you need are highly improbably null-results. Null results that

Null results are, almost by definition, easier to find that statistically significant ones. What you need are highly improbably null-results. Null results that are truly surprising, surprising because the preponderance of other evidence, theoretical and realized, point to it being true. In other words, its generally much easier for your head to come out of the barrel without an apple.