Illustrating the chaos that has resulted from the inability of the authors of the AMA Guides 3-5 to provide a method of assessment. New Zealand has modified AMA  4 chapter 14 Mental and Behavioural to produce the ACC Handbook.See also Bizarro World II. The Motor Accident Authority in New South Wales published the Psychiatric Impairment Rating Scale also modifying chapter 14 AMA4. It is salutary to compare the two versions. NEW ZEALAND ACCIDENT COMPENSATION ACT The ACC User Handbook to … Continue reading AMA4 Induced Chaos, comparing the NZ and NSW revisions of the Mental and Behavioral Disorders chapter