MerseyLune Seminar: We only search efficiently for two targets when there is no alternative
Prof. Kyle Cave, University of Massachusetts:
We are very good at searching for a visual object in a complex scene when we know its colour, because we can quickly guide our eyes and our attention to locations in the scene that have that colour. When we search for either of two different targets, however, we do not always search efficiently, and thus took longer to find the target. In a series of experiments, we found that subjects searching for two different colours often fixated colours that were very different from either target.