Download or read book Psychology written by Peter O. Gray and published by Macmillan. This book was released on 2006-04-07 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt: An introductory text that explores Psychology's major theories, and the evidence that supports and refutes them. This title incorporates research, helping students to probe for the purposes and biological origins of behavior - the 'whys' and 'hows' of Human Psychology.