I agree with you that negative findings should be published when they are solid. They can be tough to publish, however! I often assign this result as an exercise in my development seminar, after I teach students about causality. “What does it mean to have estimated a causal relationship when you cannot reject the null?,” and delight in the variety of answers I get.

I appreciate too the emphasis on ‘negative finding’ – Negative results that come from robust data are often the most interesting and surprising. This is a good lesson to teach our grad students – not everything has to be stat significant.