The Encyclopedia of Positive Psychology

Shane J. Lopez is the Research Director of the Clifton Strengths Institute, as well as a Gallup senior scientist. He is co-editor with C. Rick Snyder on the Handbook of Positive Psychology (2002) and Positive Psychological Assessment: A Handbook of Models and Measures (2003 and also co-author with C.Rick Snyder on the textbook Positive Psychology: The Scientific and Practical Explorations of Human Strengths (2002).