We've all got friends who can't stand the sight of typos or grammatical errors in emails - and it turns out this is partly the result of personality traits that influence how people react to written errors.

Though extroverts don't get too hung up about mistakes, introverts are more likely to negatively judge whoever wrote them.

In a new US study, 83 participants read email responses to an advertisement for a flatmate that either contained no errors or had been altered to include either typos, such as mkae (make), or grammar errors, such as your/you're.

They rated the email writers in terms of perceived intelligence, friendliness and other attributes, and provided information about themselves. At the end of the experiment, participants were asked whether they had noticed any grammatical errors in the responses and, if so, how much they bothered them.


Not surprisingly, the researchers also found that participants who reported grammar being important at the beginning of the experiment were more likely to be bothered by grammatical errors at the end.