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JAMA. 1936;106(5):386. doi:10.1001/jama.1936.02770050042015.
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HOW CARS GO OUT OF CONTROL  There is a type of automobile accident in which the explanation commonly offered is that "the car went out of control." In many cases, however, according to Henderson,1 subsequent examination demonstrates that the steering gear, motor and brakes were in good order. It is hence really the motorist who "goes out of control" and the explanation for his action lies in an instinctive reflex, which submerges the conditioned reflex built up by driving a car. The reflex concerned is the "selfrighting reflex," which is excited by any sudden disturbance of equilibrium. It is a complex reaction in which the head, body, arms and legs are all involved. When it occurs in the driver of a car, the impulse that dominates him is to steady himself in his seat. He grasps the wheel with his whole strength. His arms stiffen, and he is as


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The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
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