Do master degrees have cum laude?

There might some schools that indicate honors at the graduate level, however it is very rare that schools do.

Absolutely! You can list it under honors.

It can be, although it is rare at the graduate level.

"John Doe, who has a master's degree in psychology." is the proper usage of the apostrophe. Also: you don't capitalize "master's"

Its Master's degree. anywhere you look it will come up Master's even if you type in Master. Also my aunt is a lawyer and I asked her, I even looked it up in the new Collage Webster Dictionary so it...