NN group might have some resources, like this related article about all-caps: https://www.nngroup.com/articles/glanceable-fonts/ https://www.nngroup.com/article

NN group might have some resources, like this related article about all-caps: https://www.nngroup.com/articles/glanceable-fonts/ https://www.nngroup.com/articles/glanceable-fonts/ Or maybe more resources here: https://fonts.google.com/knowledge/readability_and_accessibility/how_type_influences_readability https://fonts.google.com/knowledge/readability_and_accessibi... People tend to apply results from proportional font studies to monospace fonts. I guess monospace text isn't popular enough to get its own studies. We need more readability A/B tests in general.