Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A Clear Introduction and Much-Needed Corrective

As the parent of a son with autism trying to understand his social and emotional deficits, I found this book to be clear and to provide an extremely useful framework for understanding emotions. It will be useful to any reader who wants a deeper and more accurate picture of emotions than is presented in popular treatments of the topic. It also gives a clear sense of how far research has yet to go to give us some of the answers we most want. Although I am sure it is dated (as of this writing), the introductory chapters do a wonderful job of placing the author's work in the context of other areas of research and other views within the same areas, describing what he sees as the strengths and weaknesses of each position.