Andrew Colman 
What is Psychology? [PDF ebook] 

This clear and lively introduction to psychology assumes no prior knowledge of the subject. Extensively revised and updated, this third edition describes psychology as it is taught at universitues. Examples are used throughout to illustrate fundamental ideas, with a self-assessment quiz focusing readers” minds on a number of intriguing psychological problems. The differences betwen psychology, psychiatry and psychoanalysis are explained, and the professions and careers associated with psychology are explored. Suggestions for further reading and useful internet sites are included.