There are quite a variety of psychology practitioners but the main streams are
1. clinical, this includes neuropsychology which studies the relation between the brain and behavior, often working in stroke and head injury programs; and geropsychology which deals with problems faced by the aging and elderly.
One of the newer fields is 'para-psychology' which deals with stuff like intuition, metaphysics, para-normal things. At the university of KZN they're doing some serious research into this (The reason I am aware is that I had 42 professors of psychology in a 9 day strategic planning workshop...the flippen' worst project ever!

)
2. Counselling, which deals with helping people make decisions, interviewing and testing clients or possible candidates for employment, and even helping people process major life changes.
3. School psychology focuses on school-aged students in order to help them succeed in school and navigate their social and academic life in the face of major life events.
4. Industrial/organisational (the only group who actually work with 'normal' people in the work environment)
To become a psychologist you need a Masters/PhD degree and two years internship.
A Psychiatrist is a diffrent animal: MB ChB (med dr) plus I think 5 years specialisation and internship for something like 13 yrs study...I still have to meet a 'normal' psychiatrist!
