Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: great book for researchers

this is one of a kind book that researchers in sociology, psychology and business can use. great to be used in determining the audience impact, use of certain media, tools, ideas, etc. the model used is exactly an innovation that researchers can't resist in using. a new paradigm shift in research methodology. the book is full of illustrative stories to use in related literature of a study. E. Rogers is an excellent scholar. i give him a five star award for his innovation. From: Prof. Rudy P. Divino, DBA(cand)