Richard Gross is the author of Essential A2 Psychology for AQA(A) and Essential AS Psychology for AQA(A), and numerous other bestselling psychology textbooks published by Hodder & Stoughton. Nancy Kinnison has over 27 years' experience as a Staff Nurse, Ward Sister, and as a Further Education lecturer. She piloted the new BTEC Diploma in Health Studies and has taught Psychology to Diploma of Nursing students.