apparently not. there's socio-psychology and psycho-linguistics
too. if it's the basic of anything, we would already be doing them
in sec school. 
it's just one way of doing things, and
the rest is mix and match.
psychology just sounds more common becoz we hear about it so often
from movies and drama. besides, psychology can also be divided into
cognitive, neurological, developmental, abnormal, comparative,
educational, etc, etc. in fact, what we usually watch on tv is more
like psychoanalysis, which is not even considered psychology at
all. 
if you really want to know what all those things are about, it's
best if u look the list up on wikipedia.
