Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Caveat Emptor

My first concern about this author's competence came on page four when he stated that he still passionately believes in psychotherapy. This hardly seems appropriate when there are so many concerns as to its effectiveness. I became even more alarmed when on page ten the author confessed that the book was highly anecdotal. I really became alarmed when I couldn't find any references. I became even more concerned when I couldn't find the phrases "placebo effect" or "natural rate of recovery" in the index. I was almost amused when he describes the therapeutic relationship as something quite extraordinary when I've found my years of therapy to have been of questionable value. Moreover, I found it laughable that the author believes that a therapist can objectively determine biases from self-reported data. It seems more likely that a therapist will project such biases.