Search of jumping items: visual marking and discrete motion.
Watson and Humphreys (1997 Psychological Review 104 90-122) showed that when searching for a target, observers can ignore a previewed set of distractors (other items), effectively decreasing the number of relevant items in a difficult search display and thus speeding performance ('visual marking'). Other researchers have more recently investigated visual marking for continuously moving items, finding that shared features, and preserved inter-item spatial relationships, are helpful. Here, we tested whether visual marking occurs for a set of initial items that moves in one discrete jump (preserving shared features and inter-item spatial relationships). Marking did not occur in these displays, and we interpret this result in the context of previous research on visual marking.
Olds
Elizabeth S
ES
Department of Psychology, 75 University Avenue West, Wilfrid Laurier University, Waterloo, Ontario N2L 3C5, Canada. eolds@wlu.ca
McMurtry
C Meghan
CM
D000704:Analysis of Variance; D005260:Female; D006801:Humans; D008297:Male; D009039:Motion Perception / Q000502:physiology*; D011930:Reaction Time; D017603:Signal Detection, Psychological / Q000502:physiology; D013028:Space Perception / Q000502:physiology; D014794:Visual Fields / Q000502:physiology