An investigation of Feature Positive information coding was conducted which included Clutter Level and Display Polarity as independent variables. Three dependent measures were considered: Search Time, Designation Time, and Designation Accuracy. Twelve subjects performed a target location/designation task under 72 combinations of the experimental variables. For Search Time, the main effects of Feature Coding and Clutter Level, together with their interaction were found to be significant (p < 0.01). For Designation Time, only the main effect of Clutter was significant (p < 0.05). No significant findings were identified for Designation Accuracy.
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