Yes. These are both very common Masters Degrees sought. You may choose to focus on one of the two for your masters.
"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...
Master's of Science
The cork master is the master of the cork because he knows which wine goes with fish or pork...