Results of an analysis of the data obtained from the operation of a driver research clinic in the New York motor vehicle department showed that the accident repeaters were poorer as a group in the various tests given, ranging from 6% to 50% of the average test scores of the volunteer group. Contrary to findings elsewhere, the proportion of foreign-born among the repeaters was about that to be expected from the make-up of the total population as shown by the census. The repeaters reported greater driving experience and yearly mileage, but about four years less education than the volunteer group. Accident repeaters drive dangerously because of lack of training, or as a result of imitating other bad drivers, or because they possess sensory, motor, or temperamental defects of which they are ignorant. (PsycINFO Database Record (c) 2006 APA, all rights reserved)