Parallel search for two examples of one feature type

Abstract

In visual search experiments, subjects distinguished betwen trials with one and two targets. Targets were red or green items. Distractors were of heterogeneous colors because with homogenious distractors this would be a simple discrimination between trials with one or two unusual items and would not test for the ability to search for two different colors at the same time. Results show that subjects could guide attention toward red items and green items simultaneously.