I wonder if general tests of written and verbal communication skills would show the same correlation. I often notice poor word choices, confusing sentence struc

I wonder if general tests of written and verbal communication skills would show the same correlation. I often notice poor word choices, confusing sentence structure, and pretty obvious typos in many of the blog posts that show up on HN. Some of these people are founders. I wonder if their companies suffer due to these sorts of errors (or perhaps they just proofread business communications better).