What's in a Name?

Many students who study English as a Second Language opt to take an English name. 

Some students choose a name that sounds similar to the pronunciation of their own name.  Jae Hee may choose the name Jane.  Others choose English names merely because they like the name itself Hiroshi may choose Charlie. 

When individuals immigrate to an English speaking country, choosing an English name is often done for simplicity’s sake.  It will be easier for the natives of the new country to call the newcomer by the English name. 

But I’ve seen students choose English names even when they are remaining in their home countries.   Do they do this to help the teacher remember their names…supposing that teachers will better remember English names?  Or do they do it because choosing an English name allows them to change their identity, at least in the classroom?   Does having an English name allow students to feel as if they are part of an English speaking culture, and therefore inspire them and motivate them to speak with more confidence? 

Can a name really make a difference?  Will Hiroshi learn more if he’s calling himself Charlie?