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. Author manuscript; available in PMC: 2012 Feb 1.
Published in final edited form as: J Exp Psychol Hum Percept Perform. 2011 Feb;37(1):58–71. doi: 10.1037/a0020747

Figure 2.

Figure 2

Illustrations of the three tasks. Actual stimuli were presented on a black background. Filled black rectangles correspond to red, outlined rectangles correspond to green, and the digital 2s and 5s were white. On the left, the target was a red vertical rectangle among green vertical rectangles (feature search). In the middle, the target was a red vertical rectangle among green vertical and red horizontal rectangles (conjunction search). On the right, the target was a digital 2 among digital 5s (spatial configuration search).