Naval researchers studied the effects of delay in the presentatio of visual information on pilot performance. Simulated carrier landing tasks were performed by subjects using a visual display generated by a computer. In one part of the experiment pilots were asked to "fly" carrier approaches with and without a 0.1 second delay in the visual scene presented to them. In the second part of the experiment, pilots were asked to "fly" carrier approaches several times during which six pilot control inputs were recorded. Statistical analysis of the data generated by the experiment indicated that the differences between mean performance with delay and with no delay were not significant. Variances of lateral control deflection and force were significantly different for the delayed presentation and the nondelayed presentation, but the analysis of the other four control inputs did not reveal statistically significant differences. (CH)