There is an aspect that the article doesn't present sufficiently - why do people have their name? Do they perform differently because of the name or is their na

There is an aspect that the article doesn't present sufficiently - why do people have their name? Do they perform differently because of the name or is their name a consequence of something that altered their behavior? For instance, if some immigrant is willing to change his name (as stated in article) he would probably be willing to make other things that would make him blend better into the new society, which could mean he was earning more. In this case name change is just a symptom, not the cause.