The correlation seems to exist, but implying causation is a bit of a stretch. I'm definitely introverted and annoyed by typos and grammar mistakes I can identi

The correlation seems to exist, but implying causation is a bit of a stretch. I'm definitely introverted and annoyed by typos and grammar mistakes I can identify (despite making some myself with English being my 3rd language), but I also consider them harmful and contagious: e.g. the possessive "its" is written more often as "it's" than not these days, especially in tech articles and blog entries posted on HN. Therefore it's not really an emotional, knee-jerk reaction, but conscious pedantry and anger because of the harm done to readers through neglect. Here's another theory (well, hypothesis...): extroverted people frequently have a good memory (names, faces, birthdays...) and can tolerate sloppy writing by others because it doesn't affect their own, while those who - like me - need to refresh their memories regularly and possibly rely more on reading for language skills, might find typos and grammar mistakes more harmful.