Publishing negative results helps avoid duplication of studies and guide future research.
It is based on the transparency of research; in fact, open data allow you to verify the process that led to a negative outcome.
It is unfortunately a not widespread practice, which derives from the fear that the negative outcome could have an unfavorable impact on the reputation of the researchers.
However, it is very important to encourage a paradigm shift that recognizes the value of sharing data and research results.
Asapbio promoted a competition to promote the publication of negative results as good practice for Open Science. Here are the winners.
Example of publishing negative results in asapbio:
Lilya Andrianova et al., No evidence from complementary data sources of a direct projection from the mouse anterior cingulate cortex to the hippocampal formation, BioRxiv, https://doi.org/10.1101/2022.01.25.477805