For anyone researching or writing in the area of intrinsic and extrinsic motivation this is an invaluable resource. The first chapter gives a detailed overview of Self-Determination Theory and its sub-theories from the theory's originators, Deci & Ryan. Subsequent chapters by a range of distinguished researchers provide detailed literature reviews linked to theory in a variety of contexts, notably education and the workplace. This book has saved me probably hundreds of hours of searching and interpreting the research literature in this field the hard way! Although certainly an academic text, I didn't find it too dry. Most of the authors write well and their enthusiasm for the subject shines through, (although perhaps this was my impression because I feel the same way!). Highly recommended.