Abstract
4 groups of Ss were run under a fourfold combination of financial incentive and no incentive, and knowledge of results and no knowledge of results in a visual monitoring task. Knowledge of results was provided automatically by means of colored lights, and the financial incentive was 5 cents for each detection, minus 5 cents for each commissive error (false alarm). Knowledge of results led to significantly higher detection rates and earnings for Ss ( p < .001), but the financial incentive did not affect performance on any measure. Commissive errors were not influenced by either experimental treatment. The problems of financial incentives and software design for monitoring systems are discussed.
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