Social workers and other helping professionals are often required to assess and evaluate the effects of their interventions, but feel ill-equipped to do so. This book shows the importance of scientific thinking, but also makes it highly accessible. The examples are a little dated, but the principles are solid. One important feature of the book is the list of fallacies into which all helping professionals can fall if they do not apply critical thinking to their practice. The author also points out how a critical eye should be trained on scientific literature, some of which should have been measured by the principles outlined in this book!
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