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. Author manuscript; available in PMC: 2014 Jan 1.
Published in final edited form as: Neuropsychology. 2013 Jan;27(1):48–59. doi: 10.1037/a0030921

Figure 1.

Figure 1

Design of the visual search task with four conditions: feature search and organized, disorganized and cued conjunction search. For cued conjunction search for display purposes, cue and search display are shown here superimposed, whereas in the actual task the cue appeared 150 ms prior (and not simultaneously) to the search display. Specific effects were visual load calculated as the difference between high load (8 set size) and low load (4 set size) [visual load = 8 – 4 items], cue validity calculated as the difference between invalid and valid trials [validity = invalid –valid], with benefits for valid cueing calculated as the difference between neutral and valid trials [benefit = neutral – valid], cueing costs as the difference between invalid and neutral trials [cost = invalid – neutral], and alertness calculated for low and high visual-load conditions as the difference between uncued and neutrally-cued trials [alertness = no cue – neutral cue].