Two modes of control, a joy stick and a multiple-lever system for the same remote manipulator were investigated experimentally. Operator performance was measured by task time and by errors made in initiating control movements. The results show superior performance with the joy stick control. However, with practice the effectiveness of the multiple-lever control tended to approach that of the joy stick. No significant correlations between performance with either control and Minnesota Rate of Manipulation Test scores were obtained. A discussion of human engineering implications is included.
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