The use of variation of any pronominal category to show degrees of respect or social distance is more widespread among different langages (and thus more likely to occur in any given language) in reference to the addressee than in reference to the speaker or to someone else.
Standardized
IF respect or social distance is distinguished for speaker (1st person) or other (3rd person) pronouns, THEN it is also distinguished for addressee (2nd person) pronouns.
Keywords
speaker, addressee, social distance, respect, honorific