@FatalMuse,
Just as an aside, 13% of the american population has social anxiety disorder, according to a friend I know who has it.
I think it has to do with how thinking works. If thinking relies on logic rather than emotion we can come to rational conclusions about others, but with emotions getting in the way, being overly critical and comparative to others and oneself, one can come to irrational conclusions of situations.
For example, an emotion may be shyness and cautiousness(I think thats an emotion), which in turn evokes skepticism in a situation. But since it was the emotion that influenced the skepticism there is better chance for irrational conclusions of others. If logic were to be of majority influence in the skepticism then rational conclusions can be reached, and therefore logical reactions to a situation.
If perhaps somebody were to read the statistic of 13% one may have emotion of oppression come to the irrational conclusion that the person meant 13% a joke because 13 is an unlucky number. But simply not having emotion be of majority influence would allow for logic to make the logical influence that the intention of the stat was to make anybody who is critical of others feel welcome knowing that it is like the most diagnosed disorder out there.