Impairment ratings in the Sixth Edition are calculated using a diagnosis-based method. Principles of assessment must be followed to ensure an accurate impairment rating. The Guides Sixth Impairment Training Workbooks are designed to review and reinforce the concepts described in the Sixth Edition. The following questions and answers, excerpted from the Guides Sixth Impairment Training Workbook, Pain, Neurology, and Mental Disorders, illustrate some of the principles of assessment common to musculo-skeletal impairment assessment. The workbook contains 150 content-based questions with answers, rationales, and thought-provoking tips. It is part of a series that includes upper extremities, lower extremities, spine, internal medicine, and pain, neurology and mental disorders. For an up-to-date list visit

In the International Classification of Functioning, Disability, and Health Model, which of the following statements is correct?

ANSWER: e. Both c and d are true....

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