I understand the difference between I'm playing tennis and I play tennis.
As to "I'm studying psychology" vs "I study psychology" I'd like to know if the first means:
"I'm studying it right now" and also "I'm enrolled at university, but I'm not studying at the moment of speaking, I'm not reading a book about the subject".
And ...
... Am I right if I say that "I study psychology" means more or less "I'm enrolled at university"?
Hope it's clear